Chinese sub surfaces in middle of U.S. Naval drill (unnoticed)

[Large Sarge]

http://fromthetrenchesworldreport.com/the-uninvited-guest-chinese-sub-pops-up-in-middle-of-u-s-navy-exercise-leaving-military-chiefs-red-faced/25139/

[Luis337]

good story but remember it is from 2007.

I wonder if the navy has done anything to improve since then?