By Kate Aquillano

Happy Flex Friday! From Armed Forces Day through the patriotic season, celebrities and supporters have been showing their strength by flexing in support of our nation’s heroes.

The #Flex4Forces digital campaign underscores the USO’s historic mission to strengthen service members by keeping them connected to family, home and country. It allows the public to demonstrate appreciation and a personal commitment to service members and their families.

Here are 17 celebrities who stand strong behind our service members!

1. Jessica Biel

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2. Dwayne “The Rock” Johnson

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3. Garth Brooks

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4. Elizabeth Banks

Flexin’ to show support for our service peeps for the #4thOfJuly holiday with @TheUSO @PitchPerfectMovie #Flex4Forces

A post shared by Elizabeth Banks (@elizabethbanks) on

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5. Brett Favre

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6. Ashton Kutcher

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7. Evangeline Lilly

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8. Tim McGraw

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9. Dak Prescott

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10. Katherine McPhee

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11. The cast of “This is Us”

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12. Robert Irvine

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13. Jamie Lynn Sigler

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14. Josh Gad

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15. Elyes Gabel

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16. Phil Heath

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17. Robert Patrick

America be proud, celebrate your independence loud! #flex4forces

A post shared by Robert Patrick 🇺🇸 (@ripfighter) on

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Have you #Flex4Forces yet? It’s not too late. Snap your flex photo, tag the USO on social media, use #Flex4Forces and nominate four friends to flex next!