Complex sentence: As they tie him up and blindfold him, the "Bainbridge" crew stop the tow, in order for the three SEAL marksmen to finally all get three clear shots and simultaneously kill the rest of the pirates.
Split into simpler sentences: As they tie him up and blindfold him, the "Bainbridge" crew stop the tow. The three SEAL marksmen finally all get three clear shots and simultaneously kill the rest of the pirates.