DALLAS (CBSDFW.COM) – A life changing journey called Carry the Load is underway in Dallas as thousands of people push themselves to the limit, all in honor of those who make sacrifices to keep our country safe.

Along the 7 mile route near Revershon Park this is the fourth year that Dallas has held the Carry the Load event, and organizers say they’ve never seen a crowd this big.

The object of the movement is to bring back Memorial Day for what it really stands for, a time to celebrate and honor those who made the ultimate sacrifice protecting and serving our country.  Thousands walk as part of a national movement  that started in West Point New York and ends in Dallas. It is a 20 hour and 14 minute walk and participants can walk as little or as much as they want.

Dallas police officer Frederick Frazier is carrying his grandfather’s casket flag.  His grandfather served in the navy for 31 years.

“The mission was to bring back Memorial Day to America and they’re doing it.  Instead of barbecues or sitting by the pool, which there is nothing wrong with that, people are actually doing something and bringing it back.

The rest of the walk will be along the Katy Trail.  Walkers will be walking throughout the night until Monday.