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Space Delta 4
Emblem of Space Delta 4.png
Space Delta 4 insignia
Founded24 July 2020
Country United States
Branch United States Space Force
RoleMissile warning
Part ofSpace Operations Command
HeadquartersBuckley Air Force Base, Colorado, U.S.
CommanderCol Richard L. Bourquin
Deputy CommanderLt Col Jason M. McCandless[1]
SuperintendentCMSgt Willie H. Frazier II

Space Delta 4 (DEL 4) is a delta of the United States Space Force, responsible for providing strategic and theater missile warning to the United States and its international partners. It operates three constellations of Overhead Persistent Infrared (OPIR) satellites and two types of Ground-Based Radars (GBRs) for the purpose of conducting strategic and theater missile warning. Additionally, DEL 4 provides tipping and cueing to missile defense forces, battlespace awareness to combatant commanders and technical intelligence for further analysis and manages weapon system architectures and ensures operations are intelligence-led, cyber-resilient, and driven by innovation, while postured to operate in a contested, degraded, and operationally-limited environment.[2]

Activated on 24 July 2020, the delta is headquartered at Buckley Air Force Base, Colorado. Its current commander is Colonel Richard L. Bourquin.[2][3]

DEL 4 was based on the previous 460th Operations Group, 460th Space Wing and 21st Operations Group, 21st Space Wing.[4][5]


Space Delta 4 is composed of the following units:[2]


No. Commander[3] Term Superintendent
Portrait Name Took office Left office Duration
1Bourquin, Richard L.Colonel
Richard L. Bourquin
24 July 2020Incumbent130 daysChief Master Sergeant
Willie H. Frazier II


  1. ^
  2. ^ a b c "Buckley Air Force Base Units". Buckley Air Force Base. Retrieved July 24, 2020. This article incorporates text from this source, which is in the public domain.
  3. ^ a b "Buckley Air Force Base Biographies". Buckley Air Force Base. Retrieved July 24, 2020. This article incorporates text from this source, which is in the public domain.
  4. ^ Space Force Organisations Take Shape, July 24, 2020.
  5. ^ "Space Delta 4 - Missile Warning". Buckley Air Force Base. Retrieved November 10, 2020.

 This article incorporates public domain material from websites or documents of the United States Government.

This page was last edited on 10 November 2020, at 23:43
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