train efforts in marja. a gunship was sent to fly cover for the u.s. troops while they were trapped in that compound. martha: how long were they trapped there? >> a number of hours. by the afternoon the pentagon press secretary could not confirm the americans had been evacuated. >> there is fighting on the ground as we speak. everything is being done to secure the safety of those forces and the afghan forces they were coupled. >> they took shelter in an area surrounded by a sea of taliban compounds. martha: we have questions about what u.s. troops were doing in