This easter egg can be found in the Stasis Interrupted DLC by Gearbox Software and Darkside Game Studios. It features a small nod to the Aliens: Infestation DS videogame released in 2011. The easter egg can be found in mission 3 of the SP DLC. Special Thanks to GBX.

A more detailed recording by Moosh89 can be found here:    • Aliens Colonial Marines - Stasis Inte...