2nd Lt. Gregory Mateo, a Marine awaiting training in the Infantry Officer Course, watches for the first time, an MV-22 Osprey fly by during a proof-of-concept training exercise for tactical employment of the Osprey in future operations at Landing Zone Cockatoo on Feb. 6. It was also the first time for most of the officers going through the training leaving most of them with a look of awe. - 2nd Lt. Gregory Mateo, a Marine awaiting training in the Infantry Officer Course, watches for the first time, an MV-22 Osprey fly by during a proof-of-concept training exercise for tactical employment of the Osprey in future operations at Landing Zone Cockatoo on Feb. 6. It was also the first time for most of the officers going through the training leaving most of them with a look of awe.