floating semisubmerged in the owing is a significant navigational risk for small and large ships. reporter: the ship was hit by rough weather, holding at sea due to an over crowded port. that day when the storm came through there were probably upwards of 10 to 12 container ships literally loitering off the coast waiting. reporter: the events adding stress to a pipeline of shipping backups worldwide and ongoing supply chain shortages. as holidays approach many consumers already are anxious about delays. many suffered disappointments last christmas when gifts arrived late. in february the post master general faced questions from congress. we fell far short. too many americans were left waiting for weeks for important deliveries of mail and packages. reporter: the usps vowing to do better this year. according to recent reporting in the wall street journal usps adding 45 new facilities for the peak shipping season, 112 new machines to sort packages, and
flotsam and jetsam is not where it was. that is why it moved further to the east of where the photograph is taken. the problem is we don t know exactly where. and so the aircraft are looking in poor visibility and this is the area that used to be what we called the roaring 40s. waters that ships got wrecked in. these are treacherous areas of water. it s very hard to detect things in. no matter, you have the p-8 and p-3 aircraft, maritime surveillance aircraft, the best surveillance technology on the planet. but they re not even with that best technology, it is still really hard in this kind of environment to pick up these little semisubmerged blips that are not emanating anything necessarily. and you re looking for something that is potentially not even there anymore.