Fire service vehicles will be at Cotswold Airport throughout the day today.
A post by Avon Fire & Rescue Service on social media has revealed the reason for this heavy presence at the site near Kemble.
It read: "If you see a lot of fire service vehicles in the area surrounding Cotswold Airport today, please be assured, there’s no need to panic.
"We will, once again, taking part in a large-scale training exercise between 09:30 and 17:00 and joined by Glosfire and DWFireRescue."
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