During the hotel shootout, none of the team are using the Kalashnikov that featured prominently earlier.
The Swann Foundation building is far too close to the launch site, and since the site is designated a secure site (and patrolled by French military, including the Foreign Legion) no private concern would be able to build there.
There are no buildings like the Swann Foundation building in French Guiana.
Ground crew are instructed they "must reach safety distance" at T-minus 30 seconds. In reality the launch site is vacated at least 45 minutes before launch.
While on the roof of the Swann control building, in response to Swann asking if he can see anything, Corbo says "the taco place on the beach looks nice". The beach isn't visible from the launch site, and certainly wouldn't have a taco place on it, since it's within the exclusion zone. The nearest town, Kourou, is about twenty kilometres away.
The time between the announcement of T-minus 30 seconds and 19 seconds is actually a full 25 seconds. The remaining 19 seconds take another 31 seconds.
There is no Saint Marcos in French Guiana.
French Guiana is tropical rainforest or tropical monsoon climate, and doesn't look as dry and open as portrayed.
It is not possible for a satellite to track the actual spread of a pandemic, although it is possible to track emergency activity that may be related. These are not the same thing.
Agent Neumann says they are "delivering evidence in a capital case". Interpol don't have capital cases (capital cases involve the death penalty).
When Brandt takes the Kalashnikov out of the car, the safety isn't on, it's switched to semi-auto. When the Kalashnikov is on the bed next to Smythe, it's switched to full auto (although it doesn't have a magazine inserted). A professional would never leave it like that.