first I am giving an option you may not have considered, shields, locks, and keys are the main symbols used in security companies. However from reviewing your website I saw more than just a a shield symbol...which is why I chose the direction of this design. The design represents 3 key point of your company;
a. Logistics, Project Management and Planning b. Systems Integration/Logical Data Security c. Physical and Life Training.
These 3 points are represented in the icon. Each gray square represents a,b,and c. The red square is HSCD
First, thank you for your submission ands your personal message. This demonstrates not only your creative talent, but more so, your level of customer service and attention to detail. Next, I will certainly share your comments with my colleagues. We have so many logos to judge, the decision will not be an easy one.