Los Alamos is indeed a restricted nuclear facility under both the Dept of Energy and, I believe, the DOD. However the security guard that accosted you was either smoking some of the local weed or was off of his meds. It's highly unlikely that the director of Los Alamos Labs has designated surrounding public streets as "photo restricted zones." And frankly, a photo of a sign with no buildings in view is of no value whatsoever to any terrorists, unless, I guess, they want to blow up the sign. From Bert Krages' Photo Attorney and his The Photographer's Right flyer... Quote: There are some exceptions to the general rule. A significant one is that commanders of military installations can prohibit photographs of specific areas when they deem it necessary to protect national security. The U.S. Department of Energy can also prohibit photography of designated nuclear facilities although the publicly visible areas of nuclear facilities are usually not designated as such.
Note the frequent use of the word "can" in that quote... Photography of and on most installations is rarely restricted except for specific sensitive areas and these are normally clearly marked. Everyone should print and carry several copies of his The Photographer's Right flyer on which Mr. Krages describes what to do when you are approached by someone when you are taking photos in public (the situation changes somewhat if you are trespassing on private or restricted government property)... Quote: 1. What is the person’s name?
2. Who is their employer?
3. Are you free to leave? If not, how do they intend to stop you if you decide to leave? What legal basis do they assert for the detention?
4. Likewise, if they demand your film, what legal basis do they assert for the confiscation?
I personally would put it like this...1. Who are you and who do you work for? (Get his card or write it down)
2. What authority/law/regulation am I violating? (chapter and verse... "security" is not an answer)
3. Am I free to leave?
--- Yes - Can I continue taking photographs?
--------- Yes - go on your way and shoot...
--------- No - back to step 2...
--- No - Why not? Under what legal authority are you detaining me?
If you are on publicly accessable public property (aka not a restricted military installation for example) or are on private property with the owner's permission, technically, you are under no legal obligation to show anyone your images, but many people think this will help defuse the situation. While that may be true it also fuels the delusions in the security person's mind that he is acting properly and it perpetuates his behavior. Next, if they tell you to delete any images you are again under no legal obligation to do so and indeed, should you later be arrested and charged with some crime, they could add charges for "destroying evidence." DO NOT DELETE THE IMAGES! However, understanding the state of mind you are likely to be in, especially if the security person is armed, if you do chose to comply, immediately thereafter pull the memory card so the images can be recovered.
Also, whatever you do, do not willingly allow them to handle your camera, film or memory cards. Legally the only point at which anyone can legally seize your gear is if you have been placed under arrest by an actual police or other law enforcement officer. At that point, unless you've run into an unethical officer, your gear and the images contained are fairly safe under rules safeguarding the "chain of evidence."
So what about the "private property" question? Generally, a private security guard has no authority outside of the property which he has been hired to guard and they generally do not have the "power of arrest" even on the property, though they may, in some cases, "gently detain" you until the police arrive. So if a private security guard seizes your gear without your consent he is vulnerable to charges of theft. If he destroys images or breaks something he is vulnerable to charges of "destruction of property." He is somewhat liable to these charges even if you are on private property where he has authority, but if he does so outside of said property he has little if any defense. Be aware that security guards are sometimes "deputized" by local law enforcement agencies in which case the guard does have some police powers. However it is incumbent upon him to properly identify himself as such.
Mike
Disclaimer... I am not a lawyer nor do I play one on TV. The above comments simply reflect MY understanding of the applicable laws and are based upon my experiences including several years as a security forces augmentee in the US Air Force. These opinions and a dollar MAY buy you a cup of coffee. The proper course of action to resolve any legal question is to consult an attorney licensed to practice law in your jurisdiction.