Sorta the same as the Mk. 42, but it is spawned as a "pod" type thing and once the chest of the human is activated, it will fly and wrap around the human (maybe a mix of the mark 42 to make it attach to the human, but then the nanotech to make it look like its "wrapping" around the human
(clip of the scene below)

https://www.youtube.com/watch?v=EeYKptVAmCA