| Helicopter Sea Combat Squadron 21 | |
|---|---|
| _patch_2015.png.webp) HSC-21 Blackjacks Insignia | |
| Active | 1977 - present | 
| Country |  United States of America | 
| Branch |  United States Navy | 
| Role | Search and Rescue (SAR) Logistical Support Naval Special Warfare (NSW) Anti-Surface Warfare (ASUW) Vertical Replenishment (VERTREP) Medical Evacuation (MEDEVAC) | 
| Garrison/HQ | Naval Air Station North Island | 
| Nickname(s) | Blackjacks | 
| Commanders | |
| Current commander | CDR Dave Ayotte (Sep 2018-Present) | 
| Notable commanders | 
 | 

Helicopter Sea Combat Squadron 21 (HSC-21), nicknamed "Blackjacks", is an aviation unit of the United States Navy based at Naval Air Station North Island. HSC-21 is made up of five expeditionary detachments that deploy aboard ships including Combat Logistics Force support ships, Hospital Ships and Amphibious Assault ships, among others. HSC-21 flies the Sikorsky MH-60S Seahawk helicopter.
History
HSC-21 was established as Helicopter Combat Support Squadron 11 (HC-11) "Gunbearers" on 1 October 1977 at Naval Air Station North Island, San Diego, California (United States), to provide logistics support for the units of the United States Pacific Fleet. In April 2005, HC-11 was redesignated HSC-21 "Blackjacks". During Operation Iraqi Freedom HSC-21 had shore base detachment as a part of the 2515th Naval Air Ambulance Detachment, Udari Army Airfield, Kuwait. This detachment closed in Fall 2012.
See also
References
External links
- HSC-21 Official Website Archived 2008-10-20 at the Wayback Machine

