Exhibit 21.1
SUBSIDIARIES OF HUNTINGTON INGALLS INDUSTRIES, INC.
Name of Subsidiary | Jurisdiction of Organization | Ownership Percentage | ||||||||||||
Alion Asia Corporation | Delaware | 100% | ||||||||||||
Alion Holding Corp. | Delaware | 100% | ||||||||||||
Alion International Corporation | Delaware | 100% | ||||||||||||
Alion Offshore Services, Inc. | Delaware | 100% | ||||||||||||
Alion Maritime India Private Limited | Delaware | 100% | ||||||||||||
Alion Science and Technology Corporation | Delaware | 100% | ||||||||||||
Analytical Solutions, Inc. | Delaware | 100% | ||||||||||||
Avondale Engineering & Construction Company | Delaware | 100% | ||||||||||||
Commonwealth Technology Innovation LLC | Virginia | 100% | ||||||||||||
Enlighten IT Consulting LLC | Maryland | 100% | ||||||||||||
Fleet Services Holding Corp. | Delaware | 100% | ||||||||||||
GRACAR Corporation | Ohio | 100% | ||||||||||||
Gray Research, Inc. | Alabama | 100% | ||||||||||||
Hanford Integrated Infrastructure Services Contractor, LLC | Delaware | 52% | ||||||||||||
HII Defense and Federal Solutions, Inc. | Delaware | 100% | ||||||||||||
HII Energy Inc. | Virginia | 100% | ||||||||||||
HII Fleet Support Group LLC | Delaware | 100% | ||||||||||||
HII Mechanical Inc. | Virginia | 100% | ||||||||||||
HII Nuclear Inc. | Delaware | 100% | ||||||||||||
HII San Diego Shipyard Inc. | California | 100% | ||||||||||||
HII Services Corporation | Delaware | 100% | ||||||||||||
HII Technical Solutions Corporation | Delaware | 100% | ||||||||||||
HII Technical Solutions Limited | United Kingdom | 100% | ||||||||||||
HII TSD Holding Company | Delaware | 100% | ||||||||||||
HII (US) International Holding Company | Delaware | 100% | ||||||||||||
HII (UK) International Holding Company Ltd. | United Kingdom | 100% | ||||||||||||
HII Unmanned Systems, Inc. | Delaware | 100% | ||||||||||||
Huntington Ingalls Engineering Services, Inc. | Delaware | 100% | ||||||||||||
Huntington Ingalls Incorporated | Virginia | 100% | ||||||||||||
Huntington Ingalls Industries Australia PTY Ltd. | Australia | 100% | ||||||||||||
Huntington Ingalls Industries Energy and Environmental Services, Inc. | Delaware | 100% | ||||||||||||
Huntington Ingalls Industries International Shipbuilding, Inc. | Nevada | 100% | ||||||||||||
Huntington Ingalls Industries Risk Management LLC | Vermont | 100% | ||||||||||||
Huntington Ingalls Unmanned Maritime Systems, Inc. | Delaware | 100% | ||||||||||||
Idaho Cleanup Completion Partners, LLC | Delaware | 61% | ||||||||||||
Ingalls Shipbuilding, Inc. | Delaware | 100% | ||||||||||||
KHA Defense Solutions PTY LTD | Australia | 50% | ||||||||||||
Kostech, Inc. | New Jersey | 100% | ||||||||||||
MacAuley Brown, Inc. | Ohio | 100% | ||||||||||||
NAPS System Corporation | Ohio | 100% | ||||||||||||
National Tru Solutions LLC | Delaware | 75% |
1
Exhibit 21.1
Name of Subsidiary | Jurisdiction of Organization | Ownership Percentage | ||||||||||||
Nationwide Remediation Partners, LLC | Delaware | 100% | ||||||||||||
Newport News Nuclear BWXT-Los Alamos, LLC | Delaware | 51% | ||||||||||||
Newport News Nuclear, Inc. | Virginia | 100% | ||||||||||||
Newport News Reactor Services, Inc. | Virginia | 100% | ||||||||||||
Newport News Shipbuilding and Dry Dock Company | Delaware | 100% | ||||||||||||
Pegasus International Services, Inc. | Nevada | 100% | ||||||||||||
Pegasus International (UK), LTD | United Kingdom | 100% | ||||||||||||
Q.E.D. LLC | Virginia | 100% | ||||||||||||
Realion Robotics LLC | Virginia | 95.1% | ||||||||||||
Tera Research Incorporated | California | 100% | ||||||||||||
TITAN II Inc. | Delaware | 100% | ||||||||||||
Trusted Security Alliance, LLC | Maryland | 75% | ||||||||||||
UniversalPegasus International Trinidad and Tobago Limited | Trinidad and Tobago | 86.5% | ||||||||||||
UPI (EG), LLC | Texas | 100% | ||||||||||||
Veritas Analytics, Inc. | Virginia | 100% |
2