A fire gremlin gives Fermilab a final farewell for spring 2016 during the final prescribed burn for the season, which took place on April 18. Even a small burn can be very hot. Good planning is essential to a safe burn. Fermilab Roads and Grounds conducted 16 prairie burn events totaling about 407 acres. In so doing, they completed 90 percent of their projected burn plan for last fall and this spring.