Inside Michael's case + Libby again

The first shot is of the pipes where Michael puts the "explosives" in the engine room. It says "FUEL LINE ONE - WARNING - NO OPEN FLAMES."

The rest of shots are of contents of Michael's case. The tools on top were removed to reveal "explosives" that say:

DEMOLITION BLOCK M3A1
COMPOSITION 4
EXTREMELY HAZARDOUS: AUTHORIZED MILITARY PERSONNEL
EXPLOSIVE!
USE EXTREME CAUTION DURING HANDLING

Michael enters a code (71776) on the number pad to activate the "EXECUTE" button. Before Michael pushes the button, he hears the same Mama Cass song that was on the radio when he tried to commit suicide in the car. Libby then appears and says "Don't do it Michael." After he pushes the button, a stick pops up with a note that says "NOT YET."

While it seems cruel to torture Michael like this, it seems that Ben may be sincere about not killing the innocent people on the freighter. At the same time, at the end of season three, he tells the extraction team to kill anyone who gets in the way of them taking the pregnant women. As always the question is, can we trust Ben?