Complex sentence: Fly, Arlene, and Sears and Roebuck quickly complete the mission, but as they cannot return to their vessel, they are forced to Gate onto a Fred ship, disabling the crew in hand-to-hand combat.
Split into simpler sentences: Fly, Arlene, and Sears and Roebuck quickly complete the mission, but as they cannot return to their vessel. The four are forced to Gate onto a Fred ship, disabling the crew in hand-to-hand combat.