The GI underground press in America produced a few hundred titles during the Vietnam War, some produced by antiwar GI coffeehouses, and many of them small, crudely produced, low-circulation mimeographed "zines" written by a draftee editor opposed to the war and circulated locally off-base. Three or four GI underground papers had large-scale, national distribution of more than 20,000 copies including thousands of copies mailed to GIs overseas. These papers were produced with the support of civilian anti-war activists, and had to be disguised to be sent through the mail into Vietnam, where soldiers distributing or even possessing them might be subject to harassment, disciplinary action or arrest. The idea of smuggling a full size printing press into South Vietnam was mooted but determined to be too dangerous to attempt. As an alternative, a few GIs based in South Vietnam were issued small kits to enable them to produce little hektograph-type zines.