Just meet the minimum requirements. They hire prior military and law enforcement officers. Combat arms MOS are very likely to get hired as well as military police backgrounds. The hiring process consists of a few questions via phone and discussing deployment dates. A group Skype interview will be conducted and a drug test will be done before departure to the training facility. If everything goes well you will be hired.

I was told to add to my resume to qualify for the job, outside of that there was literally nothing done besides confirming I had no prior arrests. Everything was done by email or in person in Moyock NC. Even at their facity, they communicated only by email, until it was time to sign our Statement of work, in person.