A touchdown can be scored by special teams on a kickoff or punt return, or on a return after a failed or blocked field goal attempt or blocked punt. In summary, every play in which a player lawfully carries the ball beyond the goal line results in a touchdown, regardless of how he takes possession. The only exception is when the player is touched down at the 1-yard line by an opponent's player (see below). A player can also score a touchdown by returning a punt or kickoff deep into enemy territory. This type of touchdown is called a return touchdown. Only players who have carried the ball past the 1-yard line can score a return touchdown. If a player is brought down inside the 1-yard line by an opponent's player, he will lose yardage and the team that brings him down gets the ball at the 1-yard line. This rule is in place to prevent return men from scoring all day long by kicking out at the 1-yard line until they get enough returns for a touchdown. Return men still have the opportunity to score during their own half of the field, but cannot return touchdowns until they reach the end zone. Returning teams that are moving downfield may elect to kick off rather than risk a fair catch.