Tuesday is the last day for free COVID-19 testing at the Killeen Special Events Center. Testing will take place from 9 a.m. to 7 p.m. at the center, located 3301 S. W.S. Young Drive. It was underway on Monday morning as area residents took advantage of the service. Registration must be completed in advance at https://texas.curativeinc.com/. Participants must provide a mobile phone number or valid email address when registering in order to receive test results, according to a release from the City of Killeen. Tests are administered while participants remain in their vehicles. A mouth swab is collected, so no eating or drinking at least 15 minutes prior to testing. Results are provided by text message or email within 48 to 72 hours.