Details about each of the coins are in gallery too under each photo.
According to the designer of the coins they were designed and made in US. Letters in upper left quarter of the obverse of the coins are worth to notice. One of the coins from Iraq has letters MC and the number. MC means Motorcycle Club and probably coin was made for members of Blackwater's employees club.
#1 - #2 The coins connected with the contracts for US Embassy security in Baghdad and Kabul.
#3 - #4 Coins connected with the BW's contract for security of US Consulate in Herat, Afghanistan.