| 251st Cyberspace Engineering Installation Group | |
|---|---|
 251st Cyberspace Engineering Installation Group emblem | |
| Active | 1952 – present |
| Country | United States |
| Branch | United States Air Force |
| Part of | Air National Guard |
| Garrison/HQ | Springfield ANGB, Ohio |
| Motto(s) | The Oldest...The Boldest |
| Mascot(s) | Mercury the Messenger |
| Anniversaries | 2 March 1952 |
| Commanders | |
| Current commander | Colonel Steven Dudash |
| Ceremonial chief | CMSgt Todd Fluegge |
The United States Air Force's 251st Cyberspace Engineering Installation Group (251 CEIG) is an Air National Guard engineering installation unit located at Springfield ANGB, Ohio. It is the oldest communications/cyber group in the USAF and was originally chartered at the 251st Mobile Communications Group. The units assigned to the 251CEIG compromise 47.5% of the USAF's Engineering Installation capability and 47.5% of Department of Defenses Build and Extend Organic cyberspace infrastructure robust capability. The co-located 269th Combat Communications Squadron is also assigned to the 251st and is the USAF's Oldest Mobile Communications Squadrons rooted as the 1077th Signal Company Army Air Corps founded in March 1942. The Group Headquarters has 38 personnel assigned with a wartime mission to augment Major Command AFFOR staffs, Joint Force Commander staffs, Numbered Air Forces Warfighting Headquarters staffs or any Combatant Commanders cyber and Communications forward staff function.