I'm currently flying the UH-60L/M (Aircraft Commander) for the Army, and am in the process of applying to fly 60's for the Navy Reserve. The main thing I haven't been able to get a clear picture on is whether the conversion training time would be any different between going from Army Blackhawks to the Sierra vs Romeo. From what I understand the Sierra model is basically a Lima model Blackhawk with a few small differences and the glass cockpit from the Mike model, minus the autopilot, and the mission tasks and tactics are very similar to my existing background (sling loads, medevac, search and rescue, fire bucket, troop movements, etc) while the Romeo of course is a mission ASW/ASUW that I have zero experience or background in and thus would need to be trained up on. I would expect that the Cat 5 syllabus for going from Blackhawks to Romeos would be longer than Blackhawks to Sierras, but a few folks have indicated that it is more or less the same timeframe (6+ months). Seeking any guidance or expertise in this arena.