The Air Force Academy was criticized by Muslim and religious freedom organizations for playing host on Wednesday to three speakers who critics say are evangelical Christians falsely claiming to be former Muslim terrorists.

The three men were invited as part of a weeklong conference on terrorism organized by cadets at the academy’s Colorado Springs campus under the auspices of the political science department.

The three will be paid a total of $13,000 for their appearance, some of it from private donors, said Maj. Brett Ashworth, a spokesman for the academy.

The three were invited because “they offered a unique perspective from inside terrorism,” Major Ashworth said. The conference is to result in a report on methods to combat terrorism that will be sent to the Pentagon, members of Congress and other influential officials, he added.