The commander we've just met is now worried about the safety of the road down to our destination because he says there's been some attacks onthe road over the last few days, so he's just making a phone call to check what's happening and whether or not it's safe for us to proceed.
Look back at the screen grab at the top and you'll see that Francis Underwood is onthephone -- he's talking to his wife, who's shown in the next shot using a white iPhone.