Missing Letter: Captain Shade

Sending Message...
[_______],

You were never my favorite student, using your fists instead of using the ARs in practice. Even when the others thought you were crazy, but I tell each batch of students that ¨The crazy ones are the best killers¨ They all fear the (____), but it´s true, just look at yourself. I almost pissed myself, I was shocked that you murdered the (________). Hold on... I have six more students... Hold on, I have the (_______) child. I have to go. I will see you when all hell breaks loose.

Your old Captain,

Fredrick Shade