The Carson City Sheriff's Office and the courthouse are organizing a Feb. 22 blood drive in the courthouse parking lot.Walk-ins will be welcome, and an additional technician will be on duty. United Blood Services needs blood this month because of cancellations and low turnout, said Monica Marcinko, a donor-relations specialist."It's been a lot of people getting sick and a lot of people calling in," she said. "Compared to even last month, this month is even worse" for donations.The blood drive will be from 8-11:30 a.m., and a person wearing a red blood-drop costume will be on the corner, trying to …