RAPPEL TRAINING Petty Officer 2nd Class Ryan Waller, assigned to Explosive Ordnance Disposal Mobile Unit 8, descends from the rappelling tower during training aboard Naval Air Station Sigonella, Sigonella, Sicily, Oct. 5, 2006. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 215748-N-PPO89-817.jpg Photo Gallery