The director of the department of administrative services shall draw warrants on the treasurer of state for the purposes specified in this chapter , upon duly itemized and verified vouchers that have been approved by the director of the department of homeland security and emergency management. [C62, §28A.9; C66, 71, 73, 75, §29C.10; C77, 79, 81, §29C.14 ] 92 Acts, ch 1139, §14 ; 2003 Acts, ch 145, §286 ; 2003 Acts, ch 179, §157 ; 2013 Acts, ch 29, §23