Acting has always accompanied some risk. This is further emphasized by the fact that so many films these days deal with explosions that are capable of literally blowing the actors up. Since directors and agents don’t want their actors getting blown up, they usually have everything in place to make sure that they operate in a safe and secure environment that can and will protect their actors. They achieve this by cordoning off the areas where the rigs are. After all, some of them are heavy equipment and are potentially dangerous. They use utility markers to cordon those areas off. This makes sure that these areas are visible even to people who are from the other side of the set.

When the time to deal with massive explosions comes, the most cast and the crew have to strike a balance between getting the right shots in as well as getting to safety. This is because the explosions are going to be extremely dangerous. This is when the crew takes out the danger flags and sets up a perimeter around the explosion.

Cameras that are specifically hardened to withstand the shock of the blast and the heat that the explosion generates are set up near the perimeter and sometimes inside the perimeter to capture the best shot. The director gives the signal once the all-clear is released. If even one person is still in the blast zone, the whole explosion is delayed. It just shows that one person's life is worth all the expenses of even delaying an explosion.