In American football, a gunner, also known as a shooter, flyer, headhunter, or kamikaze, is a player on kickoffs and punts who specializes in running down the sideline very quickly in an attempt to tackle the kick or punt returner.   Gunners must have several techniques in order to break away or "shed" blockers, and have good agility in order to change their running direction quickly. Gunners on the punt team also must be able to block or catch. 
Gunners typically also play positions as defensive backs, wide receivers, or running back when not on special teams, often as backups.
The counterpart on the return team is called the jammer, who is assigned to block the gunner of the punting team.
The NFL Pro Bowl features a "Special Teamer" position, along with a kicker, punter, and kick returner. This is often a gunner considered to be among the best. Steve Tasker, a 7-time Pro Bowler, is considered to be one of the top gunners in NFL history.  Pro Bowler Bill Bates of the 1980s–1990s Dallas Cowboys was a well known gunner, known for daredevil plays. Ten-time Pro Bowler Matthew Slater of the New England Patriots is considered a top gunner who contributed greatly to the Patriots winning the Super Bowl in 2014, 2016 and 2018. 
On punts there will be two offensive players on the punting team lined up close to the sideline.  These are called gunners. According to the NFL Rules Digest: 
During a kick from scrimmage, only the end men, as eligible receivers on the line of scrimmage at the time of the snap, are permitted to go beyond the line before the ball is kicked.
These two eligible receivers on the kicking team―the gunners―are allowed to start running down the field as soon as the ball is snapped. The gunner's job is to try to get down the field as fast as the kicked ball and tackle whoever catches it.  In the best case, they get there just before the ball and make the other team afraid to try to return it, leading to a fair catch. When a team lines up to punt, the other team lines up in a defense that is designed to also receive a punt. There typically will be one player lined up about 40 yards back; he is the punt returner, the player designated to catch the punt. There will also be a few players lined up on the gunners; these players are called jammers.  If the defense lines up two defenders on each gunner, then they are hoping to slow the gunners down, catch the punt, and try to run the punt back for a long gain or even a touchdown. If there is only one defender lined up on each gunner, then the receiving team has extra players rushing the punter, and they hope to block the punt. If no defenders are lined up on the gunners, the punting team may throw the ball to one of the gunners to pick up the first down.
Gunners typically play a similar role in kickoff coverage, in that like other members of the coverage group, they try to evade the blockers and tackle the kick returner. 
Canadian football is a sport played in Canada in which two teams of 12 players each compete for territorial control of a field of play 110 yards (101 m) long and 65 yards (59 m) wide attempting to advance a pointed oval-shaped ball into the opposing team's scoring area.
Super Bowl XVII was an American football game between the American Football Conference (AFC) champion Miami Dolphins and the National Football Conference (NFC) champion Washington Redskins to decide the National Football League (NFL) champion for the strike-shortened 1982 season. The Redskins defeated the Dolphins 27–17 to win their first Super Bowl championship. The game was played on January 30, 1983 at the Rose Bowl in Pasadena, California.
A running back (RB) is a member of the offensive backfield in gridiron football. The primary roles of a running back are to receive handoffs from the quarterback to rush the ball, to line up as a receiver to catch the ball, and block. There are usually one or two running backs on the field for a given play, depending on the offensive formation. A running back may be a halfback, a wingback or a fullback. A running back will sometimes be called a "feature back" if he is the team's starting running back.
A wide receiver (WR), also referred to as a wideout, historically known as a split end (SE) or flanker (FL), is an eligible receiver in gridiron football. A key skill position of the offense, WR gets its name from the player being split out "wide", farthest away from the rest of the offensive formation.
A fair catch is a feature of American football and several other codes of football, in which a player attempting to catch a ball kicked by the opposing team – either on a kickoff or punt – is entitled to catch the ball without interference from any member of the kicking team. A ball caught in this manner becomes dead once caught, i.e., the player catching the ball is not entitled to advance the ball, and the receiving team begins its drive at the spot where the ball was caught. Under NFL and NFHS rules, a team awarded a fair catch is also entitled to attempt a fair catch kick from the spot of the catch; however, this is rarely done. A player wishing to make a fair catch signals his intent by extending one arm above his head and waving it while the kicked ball is in flight.
This is a glossary of terms used in Canadian football. The Glossary of American football article also covers many terms that are also used in the Canadian version of the game.
American and Canadian football are gridiron codes of football that are very similar; both have their origins in rugby football, but some key differences exist between the two codes.
Strategy forms a major part of American football. Both teams plan many aspects of their plays (offense) and response to plays (defense), such as what formations they take, who they put on the field, and the roles and instructions each player are given. Throughout a game, each team adapts to the other's apparent strengths and weaknesses, trying various approaches to outmaneuver or overpower their opponent in order to win the game.
Gameplay in American football consists of a series of downs, individual plays of short duration, outside of which the ball is dead or not in play. These can be plays from scrimmage – passes, runs, punts, or field goal attempts – or free kicks such as kickoffs and fair catch kicks. Substitutions can be made between downs, which allows for a great deal of specialization as coaches choose the players best suited for each particular situation. During a play, each team should have no more than 11 players on the field, and each of them has specific tasks assigned for that specific play.
A formation in football refers to the position players line up in before the start of a down. There are both offensive and defensive formations and there are many formations in both categories. Sometimes, formations are referred to as packages.
A kickoff is a method of starting a drive in gridiron football. Typically, a kickoff consists of one team – the "kicking team" – kicking the ball to the opposing team – the "receiving team". The receiving team is then entitled to return the ball, i.e., attempt to advance it towards the kicking team's end zone, until the player with the ball is tackled by the kicking team, goes out of bounds, scores a touchdown, or the play is otherwise ruled dead. Kickoffs take place at the start of each half of play, the beginning of overtime in some overtime formats, and after scoring plays.
In gridiron football, the holder is the player who receives the snap from the long snapper during field goal or extra point attempts made by the placekicker. The holder is set on one knee seven yards behind the line-of-scrimmage. Before the play begins, he places the hand which is closest to the placekicker on the ground in a location designated by the kicker's foot, with his forward hand ready to receive the snap. After receiving the snap, the holder will place the football on the turf, or block, ideally with the laces facing the uprights and the ball accurately placed where the backhand was initially, then balancing the ball with one or two fingers until the ball is kicked.
A trick play, also known as a gadget play, gimmick play or trickeration, is a play in gridiron football that uses deception and unorthodox tactics to fool the opposing team. A trick play is often risky, offering the potential for a large gain or a touchdown if it is successful, but with the chance of a significant loss of yards or a turnover if not. Trick plays are rarely used not only because of the riskiness, but also to maintain the element of surprise for when they are used.
In American football, the specific role that a player takes on the field is referred to as their "position". Under the modern rules of American football, both teams are allowed 11 players on the field at one time and have "unlimited free substitutions", meaning that they may change any number of players during any "dead ball" situation. This has resulted in the development of three task-specific "platoons" of players within any single team: the offense, the defense, and the so-called 'special teams'. Within these three separate "platoons", various positions exist depending on the jobs that the players are doing.
A return specialist or kick returner is a player on the special teams unit of a gridiron football team who specializes in returning punts and kickoffs. There are few players who are exclusively return specialists; most also play another position such as wide receiver, defensive back, or running back. The special teams counterpart of a return specialist is a kicking specialist.
The following terms are used in American football, both conventional and indoor. Some of these terms are also in use in Canadian football; for a list of terms unique to that code, see Glossary of Canadian football.
In gridiron football, a punt is a kick performed by dropping the ball from the hands and then kicking the ball before it hits the ground. The most common use of this tactic is to punt the ball downfield to the opposing team, usually on the final down, with the hope of giving the receiving team a field position that is more advantageous to the kicking team when possession changes. The result of a typical punt, barring any penalties or extraordinary circumstances, is a first down for the receiving team. A punt is not to be confused with a drop kick, a kick after the ball hits the ground, now rare in both American and Canadian football.
The Miracle at the New Meadowlands, also called "New Miracle at the New Meadowlands" and "Miracle at the Meadowlands II" was an improbable come-from-behind win by the Philadelphia Eagles over rival team the New York Giants at New Meadowlands Stadium on December 19, 2010. The game was a crucial one in the context of the season, played between two divisional rivals in Week 15 of the 2010 NFL season. With just over eight minutes to play in the fourth quarter, the Eagles trailed the Giants by 21 points. They went on to score four unanswered touchdowns in the final seven minutes and 28 seconds of play, including a punt returned for a touchdown by DeSean Jackson as time expired. Jackson became the first player in NFL history to win a game by scoring on a punt return as time expired. The win allowed the Eagles to progress to the 2010 NFL playoffs by head-to-head tiebreaker over the Giants, where they lost to the eventual Super Bowl champion Green Bay Packers. The Giants did not qualify for the playoffs despite achieving a 10–6 record.