Chance is - in your state, you most likely have walked past by at least thousands of LAW-ABIDING, TRAINED, ARMED CITIZENS in your life in any common places such as mall, movie theaters, roads, etc. BTW - if you ever see an LEGALLY-ARMED citizen exposing his gun on his belt, I do encourage you to call 911 because it's
ILLEGAL to expose the gun under CCW status.
Here's a thing - you are much more likely to get shot by criminals with illegal guns than armed citizen. and the chance is - that criminal will be shot by LAW-ABIDING ARMED citizen.
Just so you know - the number of citizens using guns for self-defense purpose
GREATLY OUTNUMBERS the number of citizens using guns for criminal purpose. In many news about gun-related incidents... it's criminals with ILLEGALLY-OWNED guns.
I doubt it. Here is Cheri's states CCW
§ 2923.12 Current Ohio Carrying Concealed Weapons Law:
(
A) No person shall knowingly carry or have, concealed on his person or concealed ready at hand, any deadly weapon or dangerous ordnance.
(B) This section does not apply to officers, agents, or employees of this or any other state or the United States, or to law enforcement officers, authorized to carry concealed weapons or dangerous ordnance, and acting within the scope of their duties.
(C) It is an affirmative defense to a charge under this section of carrying or having control of a weapon other than dangerous ordnance, that the actor was not otherwise prohibited by law from having the weapon, and that any of the following apply:
(1) The weapon was carried or kept ready at hand by the actor for defensive purposes, while he was engaged in or was going to or from his lawful business or occupation, which business or occupation was of such character or was necessarily carried on in such manner or at such a time or place as to render the actor particularly susceptible to criminal attack, such as would justify a prudent man in going armed.
(2) The weapon was carried or kept ready at hand by the actor for defensive purposes, while he was engaged in a lawful activity, and had reasonable cause to fear a criminal attack upon himself or I a member of his family, or upon his home, such as would justify a prudent man in going armed.
(3) The weapon was carried or kept ready at hand by the actor for any lawful purpose and while in his own home.
(4) The weapon was being transported in a motor vehicle for any lawful purpose, and was not on the actor's person, and, if the weapon was a firearm, was carried in compliance with the applicable requirements of division (C) of section 2923.16 of the Revised Code.
(D) Whoever violates this section is guilty of carrying concealed weapons, a misdemeanor of the first degree. If the offender previously has been convicted of a violation of this section or of any offense of violence, if the weapon involved is a firearm and the violation of this section is committed at premises for which a D permit has been issued under Chapter 4303. of the Revised Code, if the weapon involved is a firearm which is either loaded or for which the offender has ammunition ready at hand, or if the weapon involved is dangerous ordnance, then carrying concealed weapons is a felony of the third degree. If the offense is committed aboard an aircraft, or with purpose to carry a concealed weapon aboard an aircraft, regardless of the weapon involved, carrying concealed weapons is a felony of the second degree.
I'm outta here. 
btw - since you use common sense... it's a common sense that this does not usually happen in Texas' famous metropolitan cities like Houston, Dallas, etc.