October 7, 2018 is the National Fallen Firefighter Memorial Service.
On October 16, 2001, President George W. Bush approved legislation requiring the United State flag to be lowered to half-staff on all Federal buildings to memorialize fallen firefighters. Public Law 107-51 requires this action to occur annually in conjunction with observance of the National Fallen Firefighters Memorial Service.
It is expected that President Trump will issue a proclamation for October 7th but it wasn’t available at the time of this post.
You can watch the 2018 National Fallen Firefighters Memorial Service on-line. Information is posted on this page.