Throughout all three time periods, Hays's military background is referenced, including his time as an LRRP—otherwise known as a Long-Range Reconnaissance Patrol scout—during the Vietnam War.

2 "OJT" Veterans of the Vietnam War’s LRRP units talk about how they learned the skills they needed to survive their missions deep behind enemy lines. Watch “Shadows in the Jungle,” Episode ...

Veterans of Vietnam's long range reconnaissance patrols describe how they got into LRRP units in Shadows in the Jungle - Ep. 1 "I'd like to offer you a job..." Veterans of the Vietnam War’s LRRP ...