From the Center for Public Integrity:
Despite the Pentagon’s big budgets, DOD personnel routinely accept free flights, accommodations, and hospitality from outside interests, according to a Center for Public Integrity analysis of thousands of travel disclosure records. From 1998 through 2007, the analysis found, outside sources paid for more than 22,000 trips worth at least $26 million, sponsored by an array of foreign governments, private companies, and other groups which have business with the Pentagon.