 Navy officials said it showed no sign of battle damage, though the aircraft could have crashed while trying to evade Iranian fire.The guided missile cruiser was called to protect the extraction of "Roberts" and arrived a month later.The heightened tensions contributed to the crew of "Vincennes" mistakenly shooting down a commercial airliner on a routine flight, Iran Air Flight 655, killing all 290 crew and passengers on 3 July, less than 2 months after their arrival.