responsible for the chief of naval operations in the 7th fleet to look at every possible option for what could have caused these four different ship collisions. i visited the u.s.s. john s. mccain with senator john mccain in june and i m praying for the loss of those 10 sailors and for the loss of other sailors on the fitzgerald. it s fairly striking that there have been four collisions at sea this year so far, but i think we have to first isolate the much more likely causes, failures of watch and supervision and sort of traditional use of naval observation. cyber attack is a possibility but a fairly remote possibility, and i haven t been briefed on anything that suggests that that was the cause here. i just think the navy is being responsible in looking at every possible source of that loss of steering power. and admiral richardson, the chief of naval operations, says there is no indication of that right now, of a cyber attack, but they will investigate that to be sure, just to make