Mercy Supplies Defense Logistics Agency Distribution San Diego employees load material onto the Navy hospital ship USNS Mercy at Naval Base San Diego, March 21, 2020, in support of the COVID-19 pandemic. Naval Base San Diego will serve as a test bed for 5G technology related to naval logistics. SHARE IMAGE: Download Image: Full Size (3.22 MB) Photo By: Marc Walker, DOD VIRIN: 200321-D-LU733-002.JPG Photo Gallery