Tactical gear and law enforcement supply info can be found in many specialist stores in most major cities, as well as online. In fact, exploring the available options online is by far the best way to find what you need. Everything is right at your fingertips, and you don't need to physically travel anywhere.
A simple search on any of the major search engines online will reveal a wealth of information. The online stores specializing in armed forces and law enforcement tactical clothing are numerous. It is a highly competitive business, which means, of course, that you are essentially spoiled for choice.
Tactical gear involves a lot of different things, especially for members of the armed forces. Of course, you don't wear all the possible combinations at the same time. That would be impossible. It's just that there are many different options for different situations.
It all depends on what you need to do really, and as you may find yourself in any situation, you need to be prepared. That means having all the different types of clothing close to hand as a "just in case" kind of insurance policy. It's probably best summed by saying, you never know what might happen next.
For example, chest rigs are available for vehicle operators, those in admin, those on patrol, and those in the front line. Assault vests are made for tactical patrol, for medical personnel, and for those more directly involved in battle or confrontational conditions. The same goes for plate carriers and thigh rigs, and for all the other bits and pieces that may be needed.
Tactical gear needs to be lightweight and strong. Soldiers and other members of the armed forces, as well as those in law enforcement, tend to carry quite a lot of equipment on operations, so weight becomes a very real consideration.
The battlefield is a tough place, so gear and clothing can, and usually do, take a lot of pounding and wear and tear. They need to be built to last. The best of the online stores stocking tactical items know this, of course and manufacture their stock accordingly.
Law enforcement supply info at a tactical level is a highly specialized business. Law enforcement supplies not only involves the right kind of clothing, but also specialized weapons, batons, high-powered flashlights for nighttime use, night vision optics, various types of restraints, such as handcuffs, and much more.
The world of AF tactical gear as used by those in law enforcement depends on those who can supply, and there are many excellent supply sources available.