Red, a 12-year-old Labrador who is retired as an active search dog, scales steps at an obstacle course used for training with her owner and handler Heather Roche of Bay Area Recovery Canines, in Pumphrey, Maryland, August 18, 2011. Not long after American Airlines flight 77 crashed into the Pentagon on September 11, 2001, Red was at work.[Photo/Agencies]

Red, a 12-year-old Labrador who is retired as an active search dog, is rewarded by her handler and owner Heather Roche of Bay Area Recovery Canines after a training exercise in Pumphrey, Maryland, August 18, 2011. Not long after American Airlines flight 77 crashed into the Pentagon on September 11, 2001, Red was at work.[Photo/Agencies]