Dead Limbs on Cryptomeria - Blight or Disease?

Cryptomeria are beautiful trees with an extremely fast growth rate. They require little to zero maintenance to look incredible. These trees are about 6 years old and I recently noticed a single brown branch. Hopefully this isn't a sign of blight or disease but only time will tell. I will monitor the trees throughout the rest of the year and report back with an update video something this fall.