Melancon used an e-mail sent September 2, four days after the hurricane hit, to illustrate his point. On that day, Brown received a message with the subject "medical help." At the time, thousands of patients were being transported to the New Orleans airport, which had been converted to a makeshift hospital. Because of a lack of ventilators, medical personnel had to ventilate patients by hand for as long as 35 hours, according to Melancon.

The text of the e-mail reads: "Mike, Mickey and other medical equipment people have a 42-foot trailer full of beds, wheelchairs, oxygen concentrators, etc. They are wanting to take them where they can be used but need direction.

"Mickey specializes in ventilator patients so can be very helpful with acute care patients. If you could have someone contact him and let him know if he can be of service, he would appreciate it. Know you are busy but they really want to help."

Melancon said Brown didn't respond for four days, when he forwarded the original e-mail to FEMA Deputy Chief of Staff Brooks Altshuler and Deputy Director of Response Michael Lowder.

The text of Brown's e-mail to them read: "Can we use these people?"