Sniffer dogs and a member of independent Dutch rescue group Reddingshonden RHWW stand as they prepare on the third day of their search for two missing Dutch tourists, in Boquete May 29, 2014. Volunteers and sniffer dogs from the Netherlands arrived in Panama to aid in the search for Lisanne Froon and Kris Kremers. Froon, 22, and Kremers, 21, reportedly went missing on April 1 in Boquete, Chiriqui province, after setting out on a hike. The tourists were in Panama studying Spanish and were reported missing by their host families, according to local media. REUTERS/Carlos Jasso (PANAMA - Tags: ANIMALS TRAVEL CRIME LAW)