(1) With reference to the purchase of explosive detection machines in the run-up to the 2010 FIFA World Cup tournament, (a) what was the cost of each machine, (b) how many machines (i) were purchased and (ii) are stored at OR Tambo Airport and (c) where are the rest of the machines stored; (2) (a) how many of the machines have been utilised and (b) in each case (i) on what date and (ii) for what purpose?