Paramedics from the Hazardous Area Response Team (HART) joined police and firefighters at a fire in Langley Green, Crawley.
Observer photographer Jon Rigby took this video of the fire which broke out in Langley Walk.
Emergency services were called to the fire at around 9.40am today (Thursday June 19).
Black smoke billowed from the site as firefighters fought to contain the flames as well as making sure nearby tanks of helium were kept cool.
A spokesman for the South East Coast Ambulance Service said: “The HART team came across the fire along with police and arrived around the same time as the fire service.
“They stayed on scene in support but are now clear.”