Republican S.C. Sens. Lindsey Graham and Tim Scott will kick off the Lt. Dan concert at Johnson Hagood Stadium by presenting a Harley-Davidson motorcycle signed by all 100 senators, according to concert organizers.

The Independence Fund is taking bids on the signed Harley to buy all-terrain wheelchairs for military veterans with leg injuries who need to get around outdoors.

The Lt. Dan concert is headlined by Gary Sinise, the actor who played the double amputee veteran in the movie “Forrest Gump.” Tickets are $20, with discounts for military personnel and veterans, and support The Independence Fund’s efforts to help wounded veterans.