on sunday 24-year-old army sergeant jason mccleary from export, pennsylvania died at a military hospitalany from injuries sustained by a roadside bomb that killed three other americans near kabul last week making it the deadliest attack on the u.s. military this year. >> this year alone, the u.s. military has dropped over 6,000 bombs in afghanistan. more than at any time over the past decade. part of the effort to bring the taliban to the table and end the war. bret? >> bret: jennifer griffin at the pentagon, jennifer, thanks. defense secretary mattis has also ordered 6,000 active duty troops to remain on the u.s. southern border with mexico through christmas. the one month extension expires january 31st of next year. previous orders were set to expire december 15th. up next, why democrats might try to keep one republican from starting work with the rest of congress next month. first, beyond our borders tonight. the israeli military has launched an operation to find and destroy tunnels it says were built by the hezbollah militant group. israel says the tunnels stretch from lebanon into n