Yosemite National Park Fire Chief Explains Safety Reasons for Park Closure Details Last Updated: Monday, 06 August 2018 16:33 Published: Monday, 06 August 2018 16:25 View Comments August 6, 2018 - Yosemite National Park Fire Chief, Kelly Martin gives briefing on safety reasons for Park closure during the Ferguson Fire. Source: NPS View the discussion thread. back to top