they moved along the flightline, setting two time bombs in each of the air national guard fighter jets the price tag is put at $45 million. a leftist group claims responsibility for the bombing. their immediate target of criticism, the renewal of the military draft reg slation. but officials see this as the latest incident in a long list of political violence in puerto rico, and the guard commander says it was a very professional one at that. >> they've done a good job, yes, sir. police figured they set the bombs at midnight when the guards change. so they had a good vibe on what was going on here. >> the terrorists involved are connected with the ambush of the u.s. navy bus in puerto rico a year ago. two seamen were killed, ten wounded. in this attack on the national guard base, no one was hurt, but officials say that was nothing but luck. sometimes luck is what it takes to survive a well planned terrorist attack, as navy boiler technician third class randal keith found out. >> well, the ship pulled in at san juan, puerto rico, because it was supposed to be a really good liberty port