Easy in the daytime - let's see how they performed on nighttime operations... and react to enemy practice encounters like to hide from aerial flares/ ground flares, being assaulted by guerilla warfare or ambushes and to evade capture etc... nighttime can be highly confusing and the greater chance of friendly-fire and getting lost to being separated... lot of things can go wrong. I doubt the Marines and the US Army has kept the real core old school training as all of that had changed once Clinton became POTUS... Coed training, Don't Ask - Don't Tell policy and DIs have to be nicer and less mean and green, the fatty program and enlisting just about anyone that is willing to enlist these days and get that free sex-change surgeries and the list just keeps going and going. At least here in this training excercise video I don't see a WOKE Rainbow Marine Corp.