At end of Edge of Tomorrow, when Cage and Rita and the crew are flying to the Louvre, the crew starts jumping out of the transport. Rita looks at Cage with a surprised look and says something like "you're not strapped in." Then she jumps out and he goes down with the ship.

What was going on in that moment? Was Cage tricking her somehow? I feel like there was some sort of twist occurring right then, but I missed the full context.