The online national CCW License ads are scams/spyware. There is no such thing. If your states require a CCW License to carry concealed in the public domain, go to the pertinent .gov site and take your information from there.
CCW Licensees and anyone else carrying a firearm for self-defense need to keep in mind the following: In most, if not all jurisdictions:
1. You can only legally draw your firearm when your assailant's actions have convinced you that you are in imminent, unavoidable danger of death or great bodily harm.
2. There is no such thing as a legally-defensible "warning shot". If the gun comes out, use it unless upon seeing your draw stroke, your assailant decides there are healthier places to be and takes off. If so, wave good bye as you holster up and (yes) call 9-1-1.
3. You may not show, draw/brandish a firearm to compel another person or persons' compliance with your desire for them to leave you alone/alter their direction of travel. The only thing you can do is alter your direction of travel/location. Showing you are armed/pulling your gun is Aggravated Assault with a Deadly Weapon (See #1).
4. There is no such thing as Citizen's Arrest. Case law has abolished that. You are not a Peace Officer or Law Enforcement Officer and have no arrest powers or legal power to "keep the Peace". Everyone is Innocent until proven guilty in a court of law. Holding someone at gunpoint is kidnapping by force of arms.
5. You have no backup coming unless it is the police or an ill-advised CCW licensee running to the sound of guns to be a hero. Remember that when you draw that Roscoe, it did not come with a PR accessory that sends up a neon billboard over your head that says, "I'm The Good Guy."
6. While getting involved/intervening in Third-Party dust-ups might make you look good in the news/obituary, you have a 50-50 chance of picking the right side to be on and a 100 percent chance of getting sued in civil court by either or both parties - not to mention criminal charges for all the damage/injuries/death caused by your....misses. (Remember Rule 4 of Gun Safety - "Be Sure of Your Target and what is Beyond It", for those of you who need a(nother) refresher.)
7. Have self-defense "insurance". When you draw that gun, you have literally bet everything you own in the Criminal and Civil Justice System Casino. someone has to write that $100K check to get you out on bond and put a cracker-jack legal defense team on your pending criminal AND Civil case(s).