Lifeguards needed to extend pool season Published July 20, 2010 CANNON AIR FORCE BASE, N.M. -- The search is on for Liberty Pool lifeguards to extend the swim season here. The current lifeguard crew consists of students who will return to college shortly and replacements are necessary to extend the season to Oct. 17. If replacements cannot be hired, the pool will close for the season in August. Interested individuals should call 784-2622.