Below are 60 links to consider when putting together your LinkedIn Group selections

Aerospace & Defence  21,523 members

Aerospace & Defense Industry Professionals  12,081

Aerospace & Defense Jobs  15,681

Aerospace Professionals  10,682

All Cleared – Recruiter-Candidate Connection  4,797

ASDNews Group – Aerospace, Aviation, Space, Security, Defense News & Information  5,972

Association of LOGCAP Contractors  589

Association of the United States Army (AUSA) 3,247

Aviation & Aerospace Professionals  81,041

Aviation Week  11,325

Cleared Connections  22,176

Cleared Networkers  2,677

ClearedJobs.Net – Active Security Clearance required  7,041

Connected Marines 5,604

DC, MD, VA – Intelligence, Cleared, Defense, Top Secret, Poly, Government, Recruiting Network  2,653

Defense & Aerospace Networking Professionals  2,788

Defense and Aerospace  64,513

Defense and Aerospace Connections  44,735

Defense Engineering Jobs 2,841

Defense Executive Network  4,692

Defense Industry Finance Professionals  1,928

Defense Industry Hiring Events – Security Clearance Required – and Resume Drop  2,844

Defense Industry Network  15,252

Defense Logistics, Maintenance & Performance Based Logistics (PBL)  3,499

Department of Defense (unofficial group)  26,805

Department of Defense Jobs  3,945

Disabled American Veterans  6,950

DOD Clearance Group  3,197

DoD Contractor Jobs  2,150

Federal Government Contractor Network (TFCN)  23,464

Global Contractors  570

Greater Columbus/Dayton Defense Technology and Intelligence Job Network  401

IDGA – The Network for Military Personnel and Defense Industry Professionals 5,112

Intelligence Professionals  9,070

Military & Defense Logistics  3,118

OCONUS  1,256

Professional Overseas Contractors: Your-POC.com  15,668

Security And Defense People  8,767

Security Clearance Jobs  15,331

The Aerospace & Defense Human Resources Network  3,151

The Air Force Association  5,678

The Intelligence Community  33,956

The Value Of a Veteran  11,036

The Veteran Network  2,377

Top Secret Candidates  9,913

U.S. Army Special Forces (Green Beret) Alumni  4,290

U.S. Veteran  33,771

United States Air Force Veteran  4,901

US Government Security Clearance  7,431

US Military Veterans Network  35,011

US Navy Veteran Group  5,025

US Security Clearance careers  5,266

US Veteran – Recruiter – Candidate Connection  3,901

Veteran CEO's  1,080

Veteran Job Opportunities  10,299

Veteran Mentor Network  14,137

Veteran Owned Business Discussion Group 1,343

Veteran Owned Business Master Mind Success Group  1,762

Veteran to Civilian Career Transitions  2,995

Veterans Hired  5,983