Thank you!!!!!

I run a traditional small ho layout using DC Variable Power.  Transformer is a Tech II.  Our friends son (13 yrs) purchased the Bachmann Polar Express (with DCC on board) and asked if he could run it on my layout when the family comes over.  I know very little about DCC and am wondering if he can run this engine on my layout.  The last thing I want to do is harm his new engine.  Hope someone in the forum is better informed than me.   Thank you.