Speaking on location from Vandenberg Space Force Base following a successful launch, mission manager Capt. Mike Shenk talks about what his experience was like working the last two Delta IV Heavy launches from the West Coast. In this post-launch interview, Capt. Shenk shares insights on the preparation leading up to launch, the moments before the final countdown, as well as the friendships and memories from NROL-91 that he'll continue to look back on.