Press Release

HOUSTON (July 9, 2018) KBR, Inc. (NYSE: KBR) announced today that its global government services business, KBRwyle, has been awarded a $133 million task order by the U.S. Army's Lower Tier Project Office to provide technical and engineering services to the PATRIOT missile system.

KBRwyle will provide engineering and technical analysis support of the PATRIOT missile system as well as adjunct systems. KBRwyle will support all engineering changes; modification retrofits; technical upgrades; Reliability, Availability and Maintainability (RAM) improvements; and training development for the U.S. and its allies.

The PATRIOT system provides air and missile defense protection from lower tier threats for ground combat forces and high-value assets. The most mature weapon system of the Ballistic Missile Defense System (BMDS), the PATRIOT counters short and medium-range tactical ballistic missiles, air-breathing threats, such as fixed and rotary-wing aircraft, and unmanned systems, such as cruise missiles and unmanned air vehicles.

This work will be primarily performed in Huntsville, Alabama. The task order award period is five years with a six-month extension option.

"KBRwyle has provided uninterrupted systems engineering support to the PATRIOT missile system for almost four decades," said Byron Bright, President, KBR Government Services U.S. "We are honored to carry on our work with the Army to continuously enhance the PATRIOT's performance to protect U.S. forces and allies against evolving threats."

The Army awarded this time-and-materials task order under the U.S. Army Aviation and Missile Command (AMCOM) Expedited Professional and Engineering Support Services (EXPRESS) contract. KBRwyle won a seat on the contract in October 2014.

KBRwyle delivers mission critical, trusted services that help the U.S. maintain its unique and indispensable battlespace advantage. It supports several military critical air and missile defense systems, including the Cruise Missile Defense System (CMDS), Counter-Rockets, Artillery, and Mortar System (C-RAM), and Terminal High Altitude Area Defense System (THAAD).

Estimated revenue associated with this contract award will be booked into the backlog of unfilled orders for KBR's government services business segment.

About KBR, Inc.

KBR is a global provider of differentiated professional services and technologies across the asset and program life cycle within the Government Services and Hydrocarbons sectors. KBR employs approximately 34,000 people worldwide (including our joint ventures), with customers in more than 75 countries, and operations in 40 countries, across three synergistic global businesses:

• Government Services, serving government customers globally, including capabilities that cover the full life-cycle of defense, space, aviation and other government programs and missions from research and development, through systems engineering, test and evaluation, program management, to operations, maintenance, and field logistics
• Technology, including proprietary technology focused on the monetization of hydrocarbons (especially natural gas and natural gas liquids) in ethylene and petrochemicals; ammonia, nitric acid and fertilizers; oil refining and gasification
• Hydrocarbons Services, including onshore oil and gas; LNG (liquefaction and regasification)/GTL; oil refining; petrochemicals; chemicals; fertilizers; differentiated EPC; maintenance services (Brown & Root Industrial Services); offshore oil and gas (shallow-water, deep-water, subsea); floating solutions (FPU, FPSO, FLNG & FSRU); program management and consulting services

KBR is proud to work with its customers across the globe to provide technology, value-added services, integrated EPC delivery and long term operations and maintenance services to ensure consistent delivery with predictable results. At KBR, We Deliver.

Visit www.kbr.com

Forward Looking Statement

The statements in this press release that are not historical statements, including statements regarding future financial performance, are forward-looking statements within the meaning of the federal securities laws. These statements are subject to numerous risks and uncertainties, many of which are beyond the company's control that could cause actual results to differ materially from the results expressed or implied by the statements. These risks and uncertainties include, but are not limited to: the outcome of and the publicity surrounding audits and investigations by domestic and foreign government agencies and legislative bodies; potential adverse proceedings by such agencies and potential adverse results and consequences from such proceedings; the scope and enforceability of the company's indemnities from its former parent; changes in capital spending by the company's customers; the company's ability to obtain contracts from existing and new customers and perform under those contracts; structural changes in the industries in which the company operates; escalating costs associated with and the performance of fixed-fee projects and the company's ability to control its cost under its contracts; claims negotiations and contract disputes with the company's customers; changes in the demand for or price of oil and/or natural gas; protection of intellectual property rights; compliance with environmental laws; changes in government regulations and regulatory requirements; compliance with laws related to income taxes; unsettled political conditions, war and the effects of terrorism; foreign operations and foreign exchange rates and controls; the development and installation of financial systems; increased competition for employees; the ability to successfully complete and integrate acquisitions; and operations of joint ventures, including joint ventures that are not controlled by the company.

KBR's most recently filed Annual Report on Form 10-K, any subsequent Form 10-Qs and 8-Ks, and other U.S. Securities and Exchange Commission filings discuss some of the important risk factors that KBR has identified that may affect the business, results of operations and financial condition. Except as required by law, KBR undertakes no obligation to revise or update publicly any forward-looking statements for any reason.For further information, please contact:

Investors
Nelson Rowe
Senior Vice President, Investor Relations
713-753-5082
Investors@kbr.com

Media
Brenna Hapes
External Global Communications
713-753-3800
Mediarelations@kbr.com