NCIS

Aboard Air Force One a Navy officer dies after eating with POTUS, then a Marine officer who is connected with AF1 also dies in the same way while in Georgetown.

During a training jump, a Marine dies when his main chute fails to open and he fails to pull his reserve chute.

A US Navy commander nicknamed "Seadog" washes up dead on a North Virginia beach. Two dead alleged drug dealers are found nearby. All three victims are shot. NCIS, joined by DEA and FBI, investigate.