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GPS May Not Work in the Western US, Because the Air Force's Jamming It

Jan. 26, 2018
3 min read
USAF red flag
GPS May Not Work in the Western US, Because the Air Force's Jamming It
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If your GPS navigation system fails you on your road trip west this month, it isn't you — or your Garmin. It's probably the United States Air Force.

Between January 26 and February 16, the USAF will periodically block GPS over a wide swath of the Western states, on dates coinciding with Red Flag 18-1, the military's "premier set of aerial war games."

Exercise Red Flag is an advanced military training series that simulates real-time combat conditions for pilots and weapons systems officers. The USAF has hosted Red Flag every year since 1975. The exercise takes place in a series of multi-week sessions at Nellis Air Force Base just outside of Las Vegas.

A U.S. Air Force F-16C Fighting Falcon takes off from Nellis Air Force Base. (Photo by Ethan Miller/Getty Images)



GPS has become a crucial part of modern technology, and the blackout is designed to challenge air and weapons personnel to stay familiar with alternative navigational techniques under realistic fighting conditions.

This year's exercise is the largest of its kind in Red Flag's 42-year history, and besides the US Air Force includes airplanes and crews from trusted US allies Australia and the United Kingdom in addition to the United States Marine Corps.

“We’re trying a few new and different things with Red Flag 18-1,” said Col. Michael Mathes, 414th Combat Training Squadron commander. “It’s the largest Red Flag ever with the largest number of participants, highlighting the balance of training efficiency with mission effectiveness.”

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How will this exercise affect civilians? Flying Mag reports that the GPS blackout will extend to a number of states surrounding the Nevada-based air base, including California, Nevada, Oregon, Wyoming, Arizona, Utah, Colorado, Montana and New Mexico, possibly causing inconsistent GPS access for aircraft and ground vehicles alike.

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Why We Chose It

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  • Packed with credits foodies will enjoy
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  • Not as useful for those living outside the U.S.
  • Some may have trouble using Uber and other dining credits
  • You may be eligible for as high as 100,000 Membership Rewards® Points after you spend $6,000 in eligible purchases on your new Card in your first 6 months of Card Membership. Welcome offers vary and you may not be eligible for an offer. Apply to know if you’re approved and find out your exact welcome offer amount – all with no credit score impact. If you’re approved and choose to accept the Card, your score may be impacted.
  • Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year.
  • Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year.
  • Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com.
  • Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com.
  • Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases.
  • $120 Uber Cash on Gold: Add your Gold Card to your Uber account and get $10 in Uber Cash each month to use on orders and rides in the U.S. when you select an American Express Card for your transaction. That’s up to $120 Uber Cash annually. Plus, after using your Uber Cash, use your Card to earn 4X Membership Rewards® points for Uber Eats purchases made with restaurants or U.S. supermarkets. Point caps and terms apply.
  • $84 Dunkin' Credit: With the $84 Dunkin' Credit, you can earn up to $7 in monthly statement credits after you enroll and pay with the American Express® Gold Card at U.S. Dunkin' locations. Enrollment is required to receive this benefit.
  • $100 Resy Credit: Get up to $100 in statement credits each calendar year after you pay with the American Express® Gold Card to dine at U.S. Resy restaurants or make other eligible Resy purchases. That's up to $50 in statement credits semi-annually. Enrollment required.
  • $120 Dining Credit: Satisfy your cravings, sweet or savory, with the $120 Dining Credit. Earn up to $10 in statement credits monthly when you pay with the American Express® Gold Card at Grubhub, The Cheesecake Factory, Goldbelly, Wine.com, and Five Guys. Enrollment required.
  • Explore over 1,000 upscale hotels worldwide with The Hotel Collection and receive a $100 credit towards eligible charges* with every booking of two nights or more through AmexTravel.com. *Eligible charges vary by property.
  • No Foreign Transaction Fees.
  • Annual Fee is $325.
  • Terms Apply.