If you're pulled over or in a similar situation, yes.
You can find a complete guide on laws governing firearm in PA on psp.pa.gov/firearms-information/Pages/Carrying-Firearms-in-Pennsylvania.aspx
Certainly.
ID for employee of NYPD that is not a certified police officer able to carry a firearm.
can auxiliary police officer carry there firearm in the mgm casino in Michigan if there ccw license exempt.
This is a question which needs to be directed to the TSA. As you are traveling to California, if you are not a California resident, you'd be best advised also to contact the California Department of Justice regarding your abilities to carry a concealed firearm there. They may not recognized your position as an out-of-state police officer as justification to carry a concealed firearm, or may require you to obtain a non-resident permit to carry a concealed firearm in the state. Before you depart, you can contact the local TSA representative either by going to the airport in person, or by phone. I would advise you to do this well in advance of your flight, as it is not likely to be a particular fast process.
If you mean a federal concealed weapons permit, there is no such thing. If you are a police officer or retired police officer, you can carry under federal law HR218, but other than that, you're out of luck.
Yes, as of 2013, off-duty police officers in Illinois are allowed to carry concealed weapons, but they must have a valid concealed carry license issued by the state. Thus, a police officer from Illinois can bring his weapon into Chicago when off duty if he has a valid concealed carry license.
You would be trained for and be a holder of all the licences you require including firearms by the time you complete your Police Officer training.
Unlikely. Federal law prohibits felons from possessing a firearm.
No. You cannot legally possess a firearm.
I am interpreting your question to mean, "Can the police notify your probation officer that you are making a complaint against a police officer?" The answer is "yes." The police can make contact with your probation officer at any time, for any reason, and convey any information they care to disclose.
No, not in the US. Under Federal law you cannot be in possession of a firearm. All states have separate prohibitions for felons being the police.