NEW : An Air Force official says no gunman was found and the site is ` ` secure '' The lock down was initiated days earlier after ` ` unconfirmed shooting '' of an armed man . This precipitated the Air Force to call for a lock-down -- which began at 10:30 a.m. -- `` following the unconfirmed sighting of '' such a man . FBI agents , along with local police , were dispatched to the Arizona air ##base to help . No shots were fired and no one was hurt , a local military official said .
NEW : An Air Force official says no gunman was found and the site is ` ` secure '' The lock down was initiated days earlier after ` ` unconfirmed shooting '' of an armed man . FBI agents , along with local police , were dispatched to the Arizona air ##base to help . No shots were fired and no one was hurt , a local military official said .