Lifestream will conduct two community blood drives on Saturday, February 20. The first one begins at Vons in Yucca Valley from 9:30 to 11:30 a.m. Then, the blood drive will continue at Walmart from 1 to 4. Donors with O-negative blood are especially needed. Donors will receive incentives. In addition, Lifestream now offers donors free cholesterol screening and a mini-physical with every blood donation. For more information, call 800-TRY-GIVING.