"I think we're all exhausted of seeing the violence that is taking place on our streets", Jang said during a late news conference Sunday.
There are no suspects in custody, they said.
Police said Vancouver airport was operating as normal again after the incident.
After the shooting, an SUV departed the area with at least two more people inside, Jang told reporters.
The Richmond RCMP said when officers were called to the domestic departure terminal, they "intercepted the getaway vehicle" and were shot at by the suspects.More news: Boris Johnson hails Conservatives' crushing win in U.K. Labour stronghold
The shooting, which occurred mid-afternoon outside the departures terminal, was the latest in a spate of gang-related violence across British Columbia's Lower Mainland, police said. They did not not fire back and stopped the pursuit because they were concerned people in the busy area would be hurt, Ng said.
"Next level strategies are a very intentional and strategic response, targeting individuals involved in the Lower Mainland gang conflict, and specifically targeting them with a collaborative approach with all of our law enforcement agencies, partners", he said.
Delta's police chief said last week that all police departments in B.C.'s Lower Mainland were working on the shootings.
Traffic cones blocked a section of the worldwide and Canadian departure areas at the airport, while tall, white screens in front of an entrance shielded the crime scene. Most of the shops in the area were shut down.
The vehicle was found about 17 miles from the scene of the shooting - and the vehicle was found burning in the 9700 block of Princess Drive.More news: Statement on AstraZeneca COVID-19 vaccine following JCVI update
"The airport is open and safe for airport workers and those who need to travel", according to the statement. Police are asking anyone with dashcam footage to contact the Richmond RCMP or IHIT.
NEWS 1130's Ben Wilson said sirens went screaming to the scene around 3 p.m. Police tape has gone up, and RCMP helicopters are circling overhead.
"Our thoughts are with those impacted by (Sunday's) incident".
On Sunday, federal Minister of Public Safety Bill Blair added his voice to the chorus of officials disturbed by the situation in the region.More news: Trump launches new 'communications' platform