The one unusual experience I had with security in Aruba is particular to the departure.
Just before arriving in Aruba, we were given custom forms for both Aruba and the US, as Aruba utilizes the same security system as Canada, in order to focus the customs on the departing airport instead of having to require customs on the designation airport handle security (which can be an expensive proposition if you are talking about several dozens of designation that airlines have from Aruba.
However, unlike Canada, once you clear the initial security inspection on the Aruba side, do not pack up tight — there is a secondary security inspection on the US side. I could not believe that I have to be checked twice, especially as the duty free shop is between the Aruba security location and the US security location. Imagine buying a hundred dollar bottle of vodka only to have it denied entry.
Ridiculous.