I have the American Express Platinum Card. I highly recommend it if you go TDY a lot or do a lot of personal travel. They will waive the annual fee ($450) for active duty military just by simply filling out their online form: American Express SCRA It has a ton of benefits. My favorite perk is free access to The Centurion Lounge. My wife and I were able to settle in and get some free food and drinks before flying to Venice from Vegas. Additionally, it earns rewards points that you can use for just about anything you can imagine, from purchases on Amazon to trading points with Hilton, Delta, or many other travel partners. Some more benefits: Free Global Entry$200 a year in statement credits for your choice of airline in-flight purchases (I chose Delta and got seat upgrades)Free Boingo Wi-FiImmediate SPG Gold StatusRoadside assistance (up to 4 requests per year)Airport lounge access for Centurion Lounge, Delta Lounge, Airspace Lounge, and free Priority Pass membershipLink to the card: https://www.americanexpress.com/us/credit-cards/platinum it appears like they have reduced the annual fee to $175.