cannot find just panmunjom tour only leh
I booked my JSA tour through www.dongbotravel.com.
Paid 70usd for a full day tour (in dec 2014).
The main tour guide (korean lady who spoke good english) was speaking in english, but there were four japanese guest onboard with another guide who helped to translate the info into japanese for them.
Once we are in the DMZ zone, an American soldier took over the role of tour guide. So I guess having an American soldier guide in JSA is not limited to only the tours operated by koridoor, but a standard protocol for all tour groups in JSA area.