Feedback please.

Hi all, and thanks for all your effort put in these first designs!. I cannot stress enough how much I like many of them , and how hard it is going to be to only choose only one.As you dedicate time to propose all these logos, I will take my time as well providing feedback to each one of them . To keep it simple for me, I will discard all those logos that I feel like does not match exactly to what I'm looking for so its easier to have a final selection, but once again, thanks for your dedication and time spent on them.

Quick update: Thanks everyone for all the logos that you have submitted, over 150 logos have been provided in just 2 days, its amazing. I have provided over 120 messages with feedback, so If I did not have the chance to provide it to your design I will do it as soon as I can. For new submissions, please bear in mind the requirements: defense and security should be expressed, how is up to you (shields, walls, towers, etc) . Feel free to submit as many logos as you want ,seriously, is such a shame that I have to select just one. Thanks for your work, again!