Flightline Chat Acting Defense Secretary Patrick M. Shanahan meets with service members at Osan Air Base, South Korea, June 3, 2019. SHARE IMAGE: Download Image: Full Size (1.59 MB) Tags: Shanahan, air force, indo-pacific, acting defense secretary Photo By: Lisa Ferdinando, DOD VIRIN: 190603-D-BN624-0748Y.JPG Photo Gallery