(Portland, OR)  --  A 24-year-old man is facing charges after allegedly burglarizing a construction site in Lake Oswego.  Police arrested Rosendo Sanchez-Martinez early yesterday morning after he allegedly tripped an alarm at "The Springs at Lake Oswego" on Kruse Way Place.  Police say officers found him hiding under a bus, where he had allegedly hidden a pistol.  Police say a second suspect at the scene got away.  Investigators believe the two were after copper wiring.