I was doing a level 8 last night and found the super samples after we had already ran out of time. I made it back to the extract point juuuuuuust as Pelican 1 was taking off, missing it by less than 20 meters. Sorry team!
Just had something similar happen on level 7 when a factory strider and tank dropped on the extract. I was last alive and died with the samples and the Pelican waiting.