For Michael, Barry can initially be found in Legion Square/Strawberry Avenue, sitting down at a table. Michael's experience is a little different, as he thinks he is being attacked by aliens. You are armed with a minigun, so use it to mow down the aliens. If they get too close, you will have to shake the left analog stick to the left and right to shake Michael free from being abducted. Keep killing them until Michael comes down from his high, which is when the mission will end.