Five of seven of the U.S. Navy's speedy new warships have had engine problems in the past year and four of them are now considered "test" ships that'll rarely, if ever, be deployed.
The Navy insists the costly littoral combat ship program is going to be fine after a bumpy start.
Adm. John Richardson, the chief of naval operations, said recently in Newport, Rhode Island, that most major shipbuilding programs have "startup types of issues."
He says overall, the program is on track.
But two senior senators, Arizona Republican John McCain and Rhode Island Democrat Jack Reed, say it's time for the Navy to question all of its assumptions about the ship program, which has been criticized for its growing costs, questions about the warships' warfighting ability and now, mechanical reliability.