This general lack of sleep really got to me. And little can prepare people for how they will react when deprived of it--over multiple days. Everything suffers: concentration, motivation, and performance. All key elements for what we were doing. But it is designed that way. Break you down and find out what you are really made of. Underneath the fluff. I remember during one particular lecture (on the excruciatingly boring topic of the different penetration abilities of different bullets or rounds), looking over to my left and noticing Trucker jabbing his arm with a safety pin every few minutes in an attempt to keep himself awake. The sight cheered me up no end.