Although people can, of course, wear whatever they want, these two millionaires are wearing clothes that aren't exactly appropriate for the Peruvian jungle: Johnathan (and Cesar Romero) wears a safari jacket (which is typical for visitors to Africa, not Peru) over blue jeans, and Jennifer is wearing a bright red sweater with a clashing navy vest over it, also paired with dark blue jeans.
A young man grabs a long machete and threateningly inches towards Jennifer. Jonathan sees him, freezes in place, and, instead of grabbing his gun (which is in plain audience view, in his belt holster, worn over his jacket) to stop him, simply yells "Jennifer!" then moves towards them.