Projectile paths don't move sideways either.
This is neither. At best you're seeing an engine flare from something hand launched.
Smoke will not dissipate so quickly or smoothly, so it cannot be smoke.
Totally fake'n'gay.
Possibly.
Someone caught taking $5.3 and $2.58 million dollar bribes.
16 years in prison maybe?
vanderbilt university has to have something interesting underneath of it.
https://www.epa.gov/ozone-layer-protection/halons-program
"While alternatives are available for most halon-based fire extinguishing applications c, halons are still employed for important applications such as on civil aircraft, in legacy military systems, and for oil and gas exploration."
Possible but unlikely.
Also, it the line is moving sideways like the flare off of engine exhaust, so it is not what any of you are saying it is.