On March 28, 2019, the PDEA XI launched the Regional variant of its Oplan Harabas. Dubbed with the tag line, drug test muna bago pasada, this special operations was participated in by LTO-XI, CAAP, and of course headed by PDEA. All public utility drivers in the Davao International Airport were subjected to a surprise, random drug test. Out of the __ drivers tested, three tested positive for substance use.