Hi John. I very much appreciate the updated info, plus the referral to the proper TM and chapter. The "M" Little Birds appear to use just "U.S. ARMY" on the tail boom, in a strong sans serif font, while the previous versions, including the "J" spell out, "UNITED STATES ARMY" in a different font. I've been frustrated to find a good photo of a "J" Little Bird's tailboom with a clear view of the lettering. I've got dozens and dozens of photos the "M" Little Bird tail booms, and early OH-6 Loach tail booms, but surprisingly the "J" eludes me.