Gary Holtgrefe
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Gary Holtgrefe Email & Phone Number

Communications Security Specialist at US Government Agencies
Location: Washington Dc-Baltimore Area, United States 6 work roles 3 schools
1 work email found @pesystems.com 2 phones found area 703 LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email g****@pesystems.com
Direct phone (703) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
US Government Agencies
Role
Communications Security Specialist
Location
Washington Dc-Baltimore Area, United States
Company size
978 employees

Who is Gary Holtgrefe? Overview

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Quick answer

Gary Holtgrefe is listed as Communications Security Specialist at US Government Agencies, a with 978 employees, based in Washington Dc-Baltimore Area, United States. AeroLeads shows a work email signal at pesystems.com, phone signal with area code 703, and a matched LinkedIn profile for Gary Holtgrefe.

Gary Holtgrefe previously worked as KMI and Key Manager for the Department of Navy at Us Government Agencies and Key Management Infrastructure Specialist at Pesystems, Inc.. Gary Holtgrefe holds Cyber Security from College Of Southern Maryland.

Company email context

Email format at US Government Agencies

This section adds company-level context without repeating Gary Holtgrefe's masked contact details.

{first_initial}{last}@pesystems.com
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AeroLeads found 1 current-domain work email signal for Gary Holtgrefe. Compare company email patterns before reaching out.

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Profile bio

About Gary Holtgrefe

Gary Holtgrefe is a Communications Security Specialist at US Government Agencies. He possess expertise in military, comsec, air force, dod, defense and 10 more skills.

Listed skills include Military, Comsec, Air Force, Dod, and 11 others.

Current workplace

Gary Holtgrefe's current company

Company context helps verify the profile and gives searchers a useful next step.

US Government Agencies
Us Government Agencies
Communications Security Specialist
Website
unitsevenpr.com
Employees
978
AeroLeads page
Company profile
View company profile Email format
6 roles

Gary Holtgrefe work experience

A career timeline built from the work history available for this profile.

Kmi And Key Manager For The Department Of Navy

Current
Us Government Agencies

Maryland, United States

May 2022 - Present

Key Management Infrastructure Specialist

Pesystems, Inc.

Washington D.C. Metro Area

May 2017 - May 2022

Field Support Engineer

Csra Inc

Norfolk, Virginia Area

COMSEC systems upgrade.

Aug 2015 - May 2017

Alternate Comsec Manager

North American Consulting Services

Thumrait Ab, Oman

Responsible for the implementation and operation of the system or components of the FMS COMSEC account.

Oct 2014 - Jan 2015

Alternate Comsec Manager

United States Air Force

Responsible for the implementation and operation of the system or component of the COMSEC systems.

Feb 2010 - Sep 2013
Team & coworkers

Colleagues at US Government Agencies

Other employees you can reach at unitsevenpr.com. View company contacts for 978 employees →

SR Shaffina Rashied Shaffina Rashied Colleague at Us Government AgenciesFort Lauderdale, Florida, United States View → JW John Wyane John Wyane Colleague at Us Government AgenciesBirmingham, Alabama, United States View → JM John Michalski John Michalski Colleague at Us Government AgenciesTrenton, Michigan, United States View → BP Bob Pena Bob Pena Colleague at Us Government AgenciesSan Angelo, Texas, United States View → PR Piotrowski Ron Piotrowski Ron Colleague at Us Government AgenciesPasadena, Texas, United States View → MH Mike Hancher Mike Hancher Colleague at Us Government AgenciesBaltimore City County, Maryland, United States View → DS Donna Seay Donna Seay Colleague at Us Government AgenciesLos Angeles, California, United States View → PD Patricial Donovan Patricial Donovan Colleague at Us Government AgenciesLaurel, Maryland, United States View → DL Dan Lecroy Dan Lecroy Colleague at Us Government AgenciesChesterfield, Virginia, United States View → KS Karen Slaunwhite Karen Slaunwhite Colleague at Us Government AgenciesOgdensburg, New York, United States View →
3 education records

Gary Holtgrefe education

H.S. Diploma, General

Presque Isle High School
FAQ

Frequently asked questions about Gary Holtgrefe

Quick answers generated from the profile data available on this page.

What company does Gary Holtgrefe work for?

Gary Holtgrefe works for US Government Agencies.

What is Gary Holtgrefe's role at US Government Agencies?

Gary Holtgrefe is listed as Communications Security Specialist at US Government Agencies.

What is Gary Holtgrefe's email address?

AeroLeads has found 1 work email signal at @pesystems.com for Gary Holtgrefe at US Government Agencies.

What is Gary Holtgrefe's phone number?

AeroLeads has found 2 phone signal(s) with area code 703 for Gary Holtgrefe at US Government Agencies.

Where is Gary Holtgrefe based?

Gary Holtgrefe is based in Washington Dc-Baltimore Area, United States while working with US Government Agencies.

What companies has Gary Holtgrefe worked for?

Gary Holtgrefe has worked for Us Government Agencies, Pesystems, Inc., Csra Inc, North American Consulting Services, and United States Air Force.

Who are Gary Holtgrefe's colleagues at US Government Agencies?

Gary Holtgrefe's colleagues at US Government Agencies include Shaffina Rashied, John Wyane, John Michalski, Bob Pena, and Piotrowski Ron.

How can I contact Gary Holtgrefe?

You can use AeroLeads to view verified contact signals for Gary Holtgrefe at US Government Agencies, including work email, phone, and LinkedIn data when available.

What schools did Gary Holtgrefe attend?

Gary Holtgrefe holds Cyber Security from College Of Southern Maryland.

What skills is Gary Holtgrefe known for?

Gary Holtgrefe is listed with skills including Military, Comsec, Air Force, Dod, Defense, Security Clearance, Customer Service, and Information Assurance.

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