ST. LOUIS (AP) — Some St. Louis-area officers say they are concerned that their body armor is not strong enough in the wake of police killings in Dallas and Baton Rouge, Louisiana.

Jeff Roorda, business manager for the St. Louis Police Officers Association and St. Louis County Police Association, tells the St. Louis Post-Dispatch that the union has met with city police leaders to discuss more protective ballistic vests and other ways to protect officers.

St. Louis Police Chief Sam Dotson says the city’s ballistic vests last about five years and that the department is seeking bids for new ones, with input from the union.

Roorda says some officers have bought rifle-resistant vests with their own money.

Some departments, including St. Louis County police, already have rifle-resistant vests due to donations.