plus, there are no networks, and virtually no referrals needed. see why millions of people have already enrolled in the only medicare supplement insurance plans endorsed by aarp. don t wait. call now. hi everybody, welcome back. and we are following breaking news this hour for you. a shooting outside the gates of the national security agency headquarters. the nsa. officials there investigating a shooting between a guard and two men. they were in that vehicle dressed as women. trying to enter the facility. now, this is located just outside of baltimore. kind of the halfway point between d.c. and baltimore. we get straight to msnbc s kasie hunt on the scene with the latest. kasie, what s the update from there? reporter: hi, thomas. well, at this point, we know that the fbi is investigating along with the nsa police and other authorities. they are together collecting evidence and interviewing