Complex sentence: Day-Day and Roach grow nervous about Craig's prolonged absence and attempt to go find him, so they knock at the door and are greeted by the three brothers armed with pistols and automatic rifles who take them hostage.
Split into simpler sentences: Day-Day and Roach grow nervous about Craig's prolonged absence and attempt to go find him. They knock at the door and are greeted by the three brothers armed with pistols and automatic rifles who take them hostage.