I am not a sales man, these are products I use rustic camping and in my B.O.B. If you think your BOB and your gun is enough, think again. You need a plan of action from point "A" to point "B". I strongly suggest that you supply your check point with water, food, shelter, clothing, weaponry and medical supplies. I have a correction, the bars are 200 calories each, the block of 18 is 3600 calories, sorry about that.