Chief Yeoman Rafael Villarreal, from San Antonio, rolls a foam ball in his hand promoting blood flow allowing him to fill a bag during a blood drive held on 32nd Street Naval Base.

SAN DIEGO (Mar. 21, 2007) Chief Yeoman Rafael Villarreal, from San Antonio, rolls a foam ball in his hand promoting blood flow allowing him to fill a bag during a blood drive held on 32nd Street Naval Base. Villarreal is a regular donor who says he believes it is important to give blood and keep the blood banks stocked for those who need it. The bloodmobile travels around the San Diego area covering different locations. U.S. Navy photo by Mass Communication Specialist Seaman Kathleen Gorby File# 070321-N-4776G-072