In preparation for the upcoming fire season, the U.S. Forest service will be conducting an all-day exercise at Avocado Lake in Fresno on Wednesday, March 23. The exercise will take place from 9:00 am to 5:00 pm.
From the USFS press release:
This annual Forest training for emergency vehicles operators involve[s] the use of various classes of vehicles using the red lights and sirens. This training will play a vital role in the upcoming fire season. As we approach another warm summer the Forest Service and other Fire Personnel will seek to maintain qualifications.
Areas around Avocado Lake can expect to hear sirens and air horns, off and on throughout the day, during the hours identified. For questions and concerns about the training the public may contact the Sierra National Forest at 559-297-0706 or High Sierra Ranger District 559-855-5355.