latoboy are you going to Southern Arkanses University? My friend is going to SAU and he is supposed to be flying around same time with you. Anyway regarding transit, you don't need visa as long as you stay inside the airport. But if you wanna be adventurous and hanky pank which Bangkok is well know for then you need a VISA to step out of aiport. This implies to all the countries you are going to transit. Anyway have a safe good trip. And yes don't carry any liquid stuff.