Rock Spring Congregational/UCC with support from the Arlington Rotary Club will hold a blood drive Sunday, March 6 from 10 a.m.-2 p.m. The Inova Blood Donor Services Bloodmobile will be parked along 5010 Little Falls Road. Book your appointment ahead of time by contacting laurawatchman@gmail.com or calling 1-866-256-5672 with sponsor code 8166. The need for blood is critical.