Families bound by tragedy bond over Christmas cruise in Europe

Heroes Cruise group photo at Melk Abbey in Austria   (Casey Sherman)

Vantage Travel's SS Splendor arriving in Bratislava, Slovakia. (Casey Sherman)

9/11 dad Al Santora and Granite Mountain Hotshot dad Dan Parker presenting each other with baseball caps commemorating their sons. (Casey Sherman)

Vantage Travel Heroes Cruise passengers take in a gingerbread making demonstration in Passau, Germany. (Casey Sherman)

River cruise Christmas tree decorated by 9/11 and Yarnell Hill families. (Casey Sherman)

Passengers Melissa Vialpando  and Roxanne Warneke greeting friendly horses in Vienna, Austria. (Casey Sherman)

Passengers Karen Norris and Al Santora dancing a waltz in Vienna, Austria. (Casey Sherman)