the two americans who survived are also back in the u.s.. they said they were travelin for medical tourism. a rising trend of people traveling abroad to obtain medical treatments a study estimated that in 2017 more than 1.4 million american traveled to various countrie for medical care according to a cdc survey, mexico is the most popular destination. accounting for over 40% of medical tourism trip but the state department has issued a do not travel advisor for certain states in mexico so, joining me now is ever poorest former secret servic special agent and the author o becoming bulletproof, life lessons from a secret servic agent. if he, good morning. welcome to the show. mexican officials say thes four americans were caught i the middle of a conflict between dueling drug cartels in matamoros, one of the areas under a do not travel advisory from the u.s. state department so, can you explain for ou