The 509th Infantry Regiment (previously the 509th Parachute Infantry Regiment) is an airborne infantry regiment of the United States Army.The unit was initially activated as a single battalion, the 504th Parachute Infantry Battalion, in October 1941 at Fort Benning, Georgia.Nicknamed "Geronimo", the 509th conducted the U.S. Army's first combat jump during World War II on 8 …

The 509th Bomb Wing (509 BW) is a United States Air Force unit assigned to the Air Force Global Strike Command, Eighth Air Force.It is stationed at Whiteman Air Force Base, Missouri.. The 509 BW is the host unit at Whiteman, and operates the B-2 Spirit stealth bomber. The wing can launch combat sorties directly from Missouri to any spot on the globe, engaging adversaries with large …

Historia y uso. X.509 fue publicado oficialmente en 1988 a partir de la norma X.500, [2] y asume un sistema jerárquico estricto de autoridades certificadoras (ACs) encargadas de emitir certificados. Esto contrasta con modelos de redes de confianza, como PGP, donde cualquier nodo de la red (no solo las ACs) puede firmar claves públicas, y por ende avalar la validez de …

歴史と用法. X.509の第1版は、1988年 7月3日にX.500標準と関連して公開された。 証明書を発行するための認証局（証明機関、Certificate authority、CA）の厳密な階層構造を規定している。 PGPのような、特別な認証局だけではなく誰でも署名や他人の公開鍵の真正の確認ができるweb of trustモデルと対照的で ...