The history of EOD units goes back to WWII, when delayed-explosion bombs were creating major problems in Europe. While the US was not yet in the war, we were preparing for that eventuality and wanted to be ready for anything.
The job of an explosives expert is to find any explosive device that poses a threat to soldiers or the general public. Once found, they are tasked with neutralizing and disposing of the explosive device until it is no longer dangerous.
When possible, EOD units will use a robot or other mechanical device to diffuse the bomb, but occasionally it is necessary to disarm the explosive using their own hands. EOD units are critical to the safety of the US military and innocent civilians, but it is an extremely dangerous job.
In the following video tragedy strikes for one such team and we lose CPL Greer, a brave patriot serving his country. Although tragic and extremely unfortunate these men save lives every day. Day in and day out they put themselves in danger to make the way safe for their brothers. God bless them all. RIP CPL Greer.