I am not a lawyer, and do not give legal advice. I hope this will help you find the answer to your questions.
From the Omaha municipal codes here(chapter 20, article VII):
http://library5.municode.com/default-test/home.htm?infobase=10945&doc_action=whatsnewDIVISION 2. FIREARM REGISTRATION
Sec. 20-251. Required.
(a) It shall be unlawful for any person to own, have possession of, or maintain control over any concealable firearm which has not been registered to said person with the chief of police in accordance with this division, except when such possession or control is with the knowledge and express consent of the person in whose name such concealable firearm is registered.
(b) A corporation, including a body corporate created by Nebraska statute, may register a concealable firearm in its corporate name. However, the corporation may consent to a person possessing or controlling the corporation's registered concealable firearm only if that person:
(1) Is a part-time or full-time employee of the corporation;
(2) Is acting within the scope of his or her employment with the corporation; and,
(3) Possesses a current identification card issued pursuant to section 20-208 upon satisfaction of the requirements of section 20-207.
(Code 1980, ? 20-251; Ord. No. 36045, ? 1, 9-24-02)
Sec. 20-252. Confiscation of firearm upon conviction of violation.
As a part of the judgment of conviction of any person under this division, confiscation of a concealable firearm may be ordered by the court.
(Code 1980, ? 20-252)