Salute to America Acting Defense Secretary Dr. Mark T. Esper, center, poses for a photograph with service members before the Salute to America Independence Day celebration in Washington, July 4, 2019. SHARE IMAGE: Download Image: Small (1638.4 KB)| Medium (5652.48 KB)| Full Size (8.17 MB) Photo By: Lisa Ferdinando, DOD VIRIN: 190704-D-BN624-006.JPG Photo Gallery