У вашего броузера проблема в совместимости с HTML5
This can be done with the Auction Attendees, you drive up in your vehicle, scare them so they drop to the ground and then reverse out of there, go 1 street and a bit down and then come back, this will respawn the mission NPC but the scared NPC will be on the floor still, if you have the time you can keep doing this over and over until the area is full of them, they don't de-spawn until you go much further away, additionally since they are still classed as entities you could run them all over/throw a grenade and become a Menace in 1 second.
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