Travel Union American Airways Travel Voucher Scam Scottsdale, Arizona

A company called Travel Union, based in Scottsdale, AZ, is issuing travel check vouchers worth $1,298.00. The voucher I received states: Pay to the order of American Airways on behalf xxxxxxx.  Its redeemable for two round-trip air tickets to anywhere in the continental U.S. The check voucher must be redeemed by a certain date; otherwise, it will "be transferred to the alternate". 

There was no letter with mine, just some simple instructions to call 1-866-721-3579 and reference the check voucher #. 

It also indicates that it's not a timeshare or land sales offer.