Siobhan Mullen

Contracting Officer · CONTRACTING AND PROCUREMENT · Department of Homeland Security

Email	siobhan.mullen@tsa.dhs.gov
Phone	571-227-3602
On SAM.gov notices	116 since Jan 2017 — 16 in the last 24 months
Last listed	Oct 2026

What they buy

NAICS	Industry	Notices
334511	Search, Detection, Navigation, Guidance, Aeronautical, And Nautical System And Instrument Manufacturing	70
54151	—	14
541715	Research And Development In The Physical, Engineering, And Life Sciences (Except Nanotechnology And Biotechnology)	7
334517	Irradiation Apparatus Manufacturing	6
541519	Other Computer Related Services	4
488190	Other Support Activities For Air Transportation	4
541690	Other Scientific And Technical Consulting Services	3
721110	Hotels (Except Casino Hotels) And Motels	3

PSC	Product or service	Notices
63	ALARM, SIGNAL, SECURITY DETECTION	42
6350	MISCELLANEOUS ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS	23
AC33	NATIONAL DEFENSE R&D SERVICES; DEFENSE-RELATED ACTIVITIES; EXPERIMENTAL DEVELOPMENT	14
7H20	IT AND TELECOM - PLATFORM PRODUCTS: DATABASE, MAINFRAME, MIDDLEWARE (HW, PERPETUAL LICENSE SOFTWARE)	4
6635	PHYSICAL PROPERTIES TESTING AND INSPECTION	3
X1AB	LEASE/RENTAL OF CONFERENCE SPACE AND FACILITIES	3
K063	MODIFICATION OF EQUIPMENT- ALARM, SIGNAL, AND SECURITY DETECTION SYSTEMS	3
C1BE	ARCHITECT AND ENGINEERING- CONSTRUCTION: AIRPORT TERMINALS	3

How they restrict competition

No set-aside stated — 107
NONE — 9

What they post

Special Notice — 72
Combined Synopsis/Solicitation — 31
Presolicitation — 7
Justification — 2
Justification and Approval (J&A) — 2
Sources Sought — 2

Who won their award notices

Awardee	Award notices	Latest
AGILENT TECHNOLOGIES INC Wilmington DE 19808 USA	1	Dec 2025
DS GOVERNMENT SOLUTIONS CORP Waltham MA 02451 USA	1	Dec 2025
RIGAKU ANALYTICAL DEVICES, INC. MA 01887-1017 USA	1	Oct 2021
AGILENT TECHNOLOGIES, INC. DE 19808-1610 USA	1	Oct 2021
L3 Security and Detection Systems, Inc. One Radcliff Road TEWKSBURY MA 01876 USA	1	Sep 2019
Smiths Detection Inc. 2202 Lakeside Blvd. EDGEWOOD MD 21040 USA	1	Mar 2019
Smiths Detection, LLC. 2202 Lakeside Blvd. EDGEWOOD MD 21040 USA	1	Jun 2018
Rapiscan Systems Incorporated 2805 Columbia Street Torrence CA 90250 USA	1	Apr 2017
Smiths Detection Incorporated 2202 Lakeside Blvd. EDGEWOOD MD 21040 USA	1	Apr 2017

Recent notices

Domestic Aviation Design Industry Day — Special Notice, Oct 2026
Domestic Aviation Design Industry Day — Special Notice, Oct 2026
Domestic Aviation Design Industry Day — Special Notice, Oct 2026
Bulk Resolution Technology (BRT) systems and maintenance — Combined Synopsis/Solicitation, Jul 2026
On-Person Screening and Alarm Resolution Broad Agency Announcement (BAA) — Special Notice, May 2026
Air Cargo Screening Qualification Test Process Guide — Special Notice, Apr 2026
On-Person Screening and Alarm Resolution Broad Agency Announcement (BAA) — Special Notice, Apr 2026

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Source: SAM.gov contract notices that list this contact, including SAM's fiscal-year archives from FY2015. FedSift republishes public federal procurement data and is not affiliated with the U.S. Government. Is this you? Ask us to remove this page.