The US army enlisted its first female colonel, Julia Flikke.
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Benjamin O. Davis Sr. became the first African American US Army brigadier general.
US Marines landed in Somalia as part of Operation Restore Hope in order to secure the trade routes to deliver food to the people.
A SpaceX Falcon 9 rocket ferried a US National Reconnaissance Office payload into orbit.
Former US Army Private Chelsea Manning was convicted on 17 espionage charges.
The US Navy commissioned USS Nautilus, which became the world’s first nuclear submarine.
