Security Guards
Guns are a common thing in the Philippines. It is relatively easy to buy and own a gun, so of course, criminals have them.
To counter this threat, most shopping malls and stores will have their own security guards.
You will see a lot of security around P.Burgos and in the Philippines in general.
Many have varying kinds of weapons from pistols, shotguns to fully automatic machine guns.
As a general rule you can judge the safety of the neighborhood with what weapons the security guards have. Reasonably safe places will have batons or tasers, little more dangerous areas will have shotguns, really scary places the guards will have fully automatic weapons.