Tacoma firefighters were in Fife Tuesday to participate in an exercise designed to hone their skills under live fire conditions. Nearly 30 firefighters battled the controlled blaze, which was set in a vacant house in the 6200 block of 16th Street East and on property owned by Tacoma RV Center in Fife. According to a Tacoma Fire Department spokesperson, live fire training in a controlled environment is valuable for developing firefighting skills. During the all-day training exercise, firefighters conducted interior fire attacks and used thermal imaging cameras to search for and observe fire behavior. Firefighters conducted a similar training exercise in August.