The red shirts trip a M18A1 Claymore Mine

When approaching the creek, Miles Straume notices that there is a trip wire connected to a M18A1 Claymore Antipersonnel Mine. He tries to warn the two red shirts walking towards it, but it's too late and they trip it killing them both. Miles, Daniel and Charlotte are unharmed, but the explosion leads to them being captured. That's in the next post.

You can see in the ----- shot that the mine says "FRONT TOWARD ENEMY." Apparently this mine was used by the military from 1960 on, but was designed between 1952 and 1956 making their use on the island possible since they also seemed to have used the island to test their larger explosives.