I like the one in the circle too Regretfully I lack the tools and the skills to create a logo.
Please remember that, when you do design, it has to look professional. Don't make it look like it cost you fifteen minutes in Paint
Good luck!
Azul's are nice, but yes, too heavily DoD themed. Needs to be more generic, unfortunately I have no clue how to work your fancy new-fangled technology. Hooligans.