Defense, Industrials, and Aerospace Section

Industries and Commodities

The Defense, Industrials, and Aerospace Section (DIA) is responsible for civil antitrust enforcement, competition advocacy, and competition policy in the areas of:

  • Defense
  • Avionics and aeronautics
  • Industrial equipment (e.g., rail, plastics, commercial vehicles, etc.)
  • Road and highway construction
  • Metals and mining
  • Waste industries

Federal and State Contacts

Defense & Intelligence: DIA reviews its defense industry mergers in conjunction with the Department of Defense and with the applicable military and intelligence branches affected by the proposed transaction or joint venture.

Regional and State Economies: In any review of transactions affecting regional economies, DIA works closely with the relevant state attorneys general. DIA has implemented a screening system for use by the state departments of transportation in their evaluation of the competitive effect of mergers in the highway construction industry.

International Matters: DIA often coordinates with foreign competition authorities in relation to cross-border investigations and to share knowledge about our industries.

Selected Cases and Investigations

U.S. v. Novelis Inc. and Aleris Corporation

U.S. v. Parker-Hannifin Corp. and CLARCOR Inc.

U.S. and Plaintiff States v. Waste Management, Inc. and Advanced Disposal Services, Inc.

U.S. v. United Technologies Corp. and Raytheon Co.

U.S. v. Knorr-Bremse AG and Westinghouse Air Brake Technologies Corp.

U.S. v. ZF Friedrichshafen AG and WABCO Holdings, Inc.

U.S. and State of Maryland v. Martin Marietta Materials, Inc., et al.

Related Guidelines and Reports

April 26, 2012

A Merger Screening System to Monitor Acquisitions Occurring in the Aggregate, Asphalt Concrete, and Concrete Industries

October 2016

DOJ/FTC Antitrust Guidance for Human Resources Professionals

Merger Enforcement Guidelines

January 13 2017

Antitrust Guidelines for International Enforcement and Cooperation


Silhouette of a person

Katrina Rouse, Chief

Soyoung Choe, Assistant Chief
Jay Owen, Assistant Chief

Mailing address:
Suite 8700, Liberty Square Building
450 Fifth Street, NW
Washington, DC 20530

Phone: 202-307-0924
Fax: 202-514-9033

Related pages:

Sections and Offices

Antitrust Division Leadership, Section, and Office Directory: Contains contact information for each section and office.

Division Manual: Chapter 1, Organization and Functions of the Antitrust Division

Updated June 23, 2022

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