Concord students are among others from Bedford, Derryfield, Campbell, Belmont, and Londonderry wwatching Beford seniors swim a ceremonial last lap across the pool following a recent competition at The Workout Club in Manchester.  “They always have the best traditions for senior night,” said Concord swimmer Kevin Hayes, remembering the school’s 2013 skit of a lifeguard saving a swimmer from a shark. “We have good traditions too, but not as interesting as Bedford’s.” Opposing teams sat together to observe and cheer on Bedford seniors, who this year swam with inner tubes.