This is often one of the toughest times of the year for our service members.

As they serve our country in some of the world's harshest, most dangerous places, they're missing out on irreplaceable holiday moments with those they love most — and it's all to keep us safe.

It will only take a minute out of your day to say thank you to our heroes for the selfless sacrifices they're making for you — even as you read this email. So please, will yours be one of the 100,000 signatures we need on the holiday card for our troops before midnight tomorrow?