J.F. Lehman & Company Completes the Acquisition of National Response Corporation from SEACOR Holdings Inc.

For Immediate Release

March 19, 2012

NEW YORK – J.F. Lehman & Company (“J.F. Lehman”), a leading middle-market private equity firm focused on the defense, aerospace and maritime sectors, announced today that it has completed the acquisition of National Response Corporation and its affiliated businesses NRC Environmental Services, SEACOR Response, and SEACOR Environmental Products (collectively “NRC”) from SEACOR Holdings Inc. (NYSE:CHK).

NRC is recognized as a leading provider of United States Oil Pollution Act of 1990 regulatory compliance and emergency response services, one of the leading environmental contracting firms on the U.S. West Coast, and a global provider of diversified environmental, industrial, and emergency response solutions. Headquartered in Great River, NY with regional offices throughout the U.S. and internationally, NRC has approximately 540 employees.

Alex Harman, Partner, stated “NRC is a unique business with a strong customer base and reputation for quality service. We are eager to continue NRC’s long history of excellence and leverage their leading regulatory compliance and emergency response capabilities to grow the company.”

Steve Candito will be President and CEO of NRC and commented, “Together with the rest of NRC’s senior management team, I am pleased to be partnering with J.F. Lehman. The combination of their sponsorship and NRC’s outstanding management team and employees will make for an exciting future.”

Senior debt financing for the acquisition was arranged by BNP Paribas Securities Corp. (as sole and exclusive administrative agent and joint lead arranger) and PNC Capital Markets, LLC (as sole and exclusive syndication agent and joint lead arranger). Jones Day, Blank Rome LLP and select international law firms provided legal counsel to J.F. Lehman.


About SEACOR Holdings Inc.

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SEACOR Holdings Inc. is a diversified, multinational company that owns and operates marine and aviation assets primarily servicing the oil and gas, industrial aviation and marine transportation industries.

For more information about SEACOR Holdings Inc., please visit www.seacorholdings.com.

J.F. Lehman & Company is a leading middle-market private equity firm focused exclusively on the defense, aerospace, and maritime sectors. The firm has offices in New York and Washington.

For more information about J.F. Lehman & Company, please visit www.jflpartners.com.

Contact

Lisa M. Steffens

J.F. Lehman & Company

(212) 634-1150

lms@jflpartners.com