Please take a moment and update your account profile. If you have an updated account profile with basic information on why you are on Air Warriors it will help other people respond to your posts. How do you update your profile you ask?
Never heard of a HMH-451. The west coast has HMH - 361, 462, 465, 466 and the east coast has HMH-461, 464. Were you part of that 772 bunch clogging up the Big Iron line at New River last week?