US soldiers participate in "Eager Lion" military exercise at al-Quwiera near Aqaba, on June 19, 2013

US soldiers participate in “Eager Lion” military exercise at al-Quwiera near Aqaba, on June 19, 2013. Jordanians are suspicious about US weapons and troops being deployed to the kingdom, even if Washington seeks to help its ally protect itself from a possible spillover of Syrian violence, experts say.