Gavin and Daniel are the owners of the channel Slo Mo Guys on YouTube. With the latest video they uploaded on October 31st they show us the filming they did trying to create impressive explosions for the video-game Battlefield 4. You can judge the results yourself. It is worth mentioning that real grenades were used in the risky video. One was used for the shooting Phantom Flex in 2500fps.
Wear your helmets and watch the video