Harford County fire and emergency medical services leaders, stung by critical and negative social media posts, have limited how much incident information is broadcast via an app, which all of the county's roughly 1,100 fire and EMS volunteers and workers can use to follow emergency calls. The anonymous administrator of the Harford Fire Facts page on Facebook made a series of posts between Dec. 14 and Dec. 17 about fire trucks or ambulances that allegedly "failed" to respond to a call and had to be covered by sister fire companies and about EMS units that were dispatched as "driver only," without other EMTs on board.