Finally, we get it right from the horse's mouth. From Human Events, via MoJo:

Prince’s book, tentatively titled We Are Blackwater, will be released this summer. It is the only insider’s account of the controversial company that has supplied bodyguards and support-and-rescue personnel to hot spots around the world, including the battlefields of Afghanistan and Iraq.

Prince, a former Navy SEAL, will reveal how he created Blackwater, refute criticisms of the company, and take the reader on thrilling Blackwater missions into hostile territory, from rescuing teenage missionaries in Africa, to helicoptering wounded Marines to safety, to inventing, testing, and manufacturing armored vehicles to better protect our troops in the field.

No word yet on whether Prince will be outsourcing the work to a ghostwriter.