Gemma Coultas spotted these trails in the sky over Bridlington Harbour this morning.
She said: “I saw some letters in the sky this morning and wondered if it was a tribute. Looks like CL66.
“Customers are saying it could be a tribute to the Red Arrows engineer who died yesterday - either his squadron number or the plane.
“I could see four aircraft. They stayed a while circling and left - silently.”