Oklahomans are using their limbs to help the dozens of victims at Fort Hood.
"I was more concerned about one of my co-workers son's that was actually at Fort Hood and to find out how he's doing," said blood donor Nick Nash.
The Tulsa chapter of the American Red Cross sent two cartons of platelets late Thursday afternoon to hospitals at the military base where the shootings took place.
Now the Tulsa chapter is on standby to send 150 units of blood.
And officials say donations are needed now.
"We have been flooded with calls we've seen a lot of people today. Tulsans are caring and wonderful people," said spokesperson Jan Hale.
Social networking sites like Facebook and Twitter are crammed with urgent messages about where and how to donate.
Organizers say it's become a lifesaver when donors are quickly needed.
"I came in and the parking lot was totally full and I was like what is going on, so I thought I wasn't going to find a parking space which is really good," said blood donor Sharon Waltman.
Authorities say response so far has been more than expected .
