>> the u.s. has unleashed more airpower in recent months, dropping more bombs in april than any month since 2012. secretary mattis is allowing troops closer to the front lines to call in air strikes as part of a strategy he will deliver in mid-july, which will look similar to the isis sight in iraq and syria. in february, the top u.s. commander in afghanistan said he needed, chris, a few thousand more troops later this month. there is a nato defense minister meeting in brussels where the u.s. will be asking other allies to share the burden. chris? >> chris: jennifer, thank you. the pentagon's as as a u.s. nay vessel has collided with a merchant ship in the waters near japan. the guided missile destroyer uss fitzgerald reportedly hit the other ship around 2:30 a.m. local time. it has requested assistance from the japanese coast guard. a defense officials has three compartments of the fitzgerald are flooded. but, this shift is not in danger