Christianity Today recently interviewed M-DAT Co-Founder and Director of Operations David Armstrong for an article about a trend toward domestic short-term mission trips.
The article, "Homeward Bound: Short-term missions may be shifting domestic," states, in part:
"Mitchell's comments reflect a development first noticed by David Armstrong of Mission Data International (M-DAT) two years ago. His sampling of leading agencies showed that overseas trips have decreased by 15 percent since 2008. That is the first downturn since M-DAT began measuring in 2000. Further, groups sending people overseas sent fewer and smaller teams, he said."
The full article is available at http://www.christianitytoday.com/ct/2010/june/10.15.html
Armstrong was also interviewed for a recent piece in The Wall Street Journal about a a Pennsylvania short-term mission team whose members were injured in Uganda. To read that article in its entirety, Google: "Mission Group Reels After Losses in Uganda"; it should be the top result.