I can't & don't speak for TES but I would imagine there are many reasons to suspend a search, mainly, no new leads. There has to be something to give you an idea of where to search, once you've searched those area's where else do you go? TES is made up of all volunteers & reley strictly on donations. This means people taking time from work, their families & spending out of their own pockets to do a search, you can only do that for so long. I wish I had a million bucks to give to TES cause I would in a heart beat.