1956. Male United States Air Force military training instructors (MTIs) wear dark blue hats with the Great Seal of the United States within a ring, in silver color, again centered on the front; this is the same insignia as worn on their service cap. Female MTIs wear an Australian style dark blue slouch hat. Air Force MTIs in the top ten percent of their career field wear a light blue cord and are more likely to be referred to as "Blue Ropes" than MTIs. US Coast Guard recruit training company commanders (USCG-USN counterpart to drill instructors) wear a navy blue version with a black cord; the insignia worn is the same as worn with the combination cover. The United States Navy is the only US armed force not to use the campaign hat. Their recruit division commanders wear normal prescribed hats for their uniforms, with a red aiguillette on their shoulder to show their status. Park rangers Campaign hats are worn by US park rangers of the National Park Service. The federal troops sent to protect the resources of the first national parks were cavalry troopers, whose campaign hat was adopted by the Park Service as a symbol of authority. The evolution of the campaign hat can be seen in a 1905 photo of Buffalo Soldiers in Yosemite. Although the hat would not become Army standard until six years later, some in the photo have re-creased their hats into the Montana Peak, probably during their service in Cuba or the Philippines during the 1898 Spanish–American War. Following the national park ranger style, many states' fish and game wardens and state park police wear campaign hats. Rangers of many local parks departments also wear the campaign hat, such as the New York City Urban Park Rangers. The animal logo-mascot of the US Forest Service, Smokey Bear, wears the campaign hat. Smokey's debut poster, released in 1944 and illustrated by Albert Staehle, depicts Smokey wearing jeans and a "forest ranger's hat" (a campaign hat), pouring a bucket of water on a campfire. The message underneath reads, "Smokey says – Care will prevent 9 out of 10 forest fires!" The emblem of the National Park Foundation was, until December 2013, a stylized campaign hat. Law enforcement Several US state police services and federal agencies wear campaign hats. So common is use of the campaign hat among state police agencies that state troopers are