Did a Missile Blow Up the AT&T Building in Nashville?

After a recreational vehicle in downtown Nashville exploded on Christmas morning, rumors about the cause of the explosion have been circulating on social media. One such theory, shared via a video from BitChute claims that the explosion was caused by a missile strike. The video is captioned as follows: “Surveillance video proves missile strike on Nashville.”
The video, which shows unclear footage of an explosion, claims to be a “surveillance video obtained by WKRN-TV. from BlastAway Sand Blasting proves that a missile, or directed energy weapon, not a car bomb destroyed the AT & T Building in Nashville, Tennesee [sic] on Christmas morning. The attack destroyed critical components related to upcoming the 2020 election in Georgia.”
This is a false claim. The explosion in Nashville was not caused by a missile strike but was indeed caused by a vehicle explosion.
On December 25, several hours after the explosion, the Nashville Police Department identified a photo of the RV and tweeted a picture of the vehicle saying that it “exploded on 2nd Ave N this morning. It arrived on 2nd Ave at 1:22 a.m.”