LifeStream will conduct a community blood drive on Tuesday, March 29, at Little Church of the Desert, 6079 Adobe Road in Twentynine Palms, from 2 to 6 p.m. Donors will receive incentives. O-negative blood is especially needed. In addition, Desert Blood Services now offers donors free cholesterol screening with every blood donation. For more information, call 800-TRY-GIVING.