Families Want Information On Missing Americans In Ukraine

Two U.S. military veterans, Alex Druki and Andy Kynoch, disappeared in Ukraine and are believed to be held by Russians. The U.S. government advises against Americans fighting in Ukraine. Families of the veterans seek information, and a photo of the men in a Russian truck has emerged.

What tragic event involving an American veteran is mentioned in the text?

What plea are the families of the two veterans making in the text?