Derek Henkle follows the cast of The Great Game: Afghanistan to it’s New York City debut for The Associated Press Television Horizons feed.

As the volcano at Mount St. Helens hits peak activity, Derek Henkle gives the Good Morning America audience a humorous kitchen science lesson.

400 people are arrested as they cross the street from the World Trade Center site en route to the Republican National Convention. Caught in the mass arrests were a father and his son, visiting New York City to see a play.

Derek Henkle discusses security preparations in advance of the 2004 Republican National Convention in this clip from one of the many rehearsals in advance of Good Morning America’s Weekend Edition.

This clip is from one of the many rehearsals for the launch of Good Morning America’s Weekend Edition. Derek Henkle sits in as an ABC NEWS terrorism expert.