In The Bourne Legacy (2012), Byer decides to eliminate all Outcome assets. He orders new meds distributed to the agents. He learns that both Numbers Three and Five are at the same location, and dispatches a U-CAV drone aircraft to kill both agents but only Number 5 evade the attack. Below is the transcript of controller of U-CAV drone aircraft on a radio scanner:
Spec: Requesting fuel graph, say your state.
PILOT: State two-plus-SO to splash.
Spec: Copy, Solo. Fuel to bingo is green.
What does "two-plus-SO to splash" mean?