720 ILCS 5/ Criminal Code of 2012.

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720 ILCS 5/21-6

(720 ILCS 5/21-6) (from Ch. 38, par. 21-6)

Sec. 21-6.

Unauthorized Possession or Storage of Weapons.

(a) Whoever possesses or stores any weapon enumerated in Section 33A-1
in any building or on land supported in whole or in part with public
funds or in any building on such land without
prior written permission from the chief security officer for such land or
building commits a Class A misdemeanor.

(b) The chief security officer must grant any reasonable request for
permission under paragraph (a).

(Source: P.A. 89-685, eff. 6-1-97.)

720 ILCS 5/21-7

(720 ILCS 5/21-7) (from Ch. 38, par. 21-7)

Sec. 21-7.

Criminal trespass to restricted areas and restricted landing areas at airports; aggravated criminal trespass to restricted areas and restricted landing areas at airports.

(a)  A person commits criminal trespass to restricted areas and restricted landing areas at airports when he or she enters upon, or remains in, any:

(1) restricted area or restricted landing area used

in connection with an airport facility, or part thereof,  in this State, after the person has received notice from the airport authority that the entry is forbidden;

(2) restricted area or restricted landing area used

in connection with an airport facility, or part thereof,  in this State by presenting false documents or falsely representing his or her identity orally to the airport authority;

(3) restricted area or restricted landing area as

prohibited in paragraph (1) of this subsection, while dressed in the uniform of, improperly wearing the identification of, presenting false credentials of, or otherwise physically impersonating an airman, employee of an airline, employee of an airport, or contractor at an airport.

 (b) A person commits aggravated criminal trespass to restricted areas and restricted landing areas at airports when he or she enters upon, or
remains in, any restricted area or restricted landing area used in connection
with an airport facility, or part  thereof, in this State, while in possession
of a weapon, replica of a weapon, or ammunition, after the person has received
notice from the airport authority that the entry is forbidden.

 (c) Notice that the area is "restricted" and
entry thereto "forbidden", for purposes of this Section, means that the
person or persons have been notified personally, either orally or in writing,
or by a printed or written notice forbidding the entry to him or her or a group
or an organization of which he or she is a member, which  has been conspicuously posted
or exhibited at every usable entrance to the area or the forbidden part thereof.

(d)  (Blank).

(e) (Blank).

(f) The terms "Restricted area" or "Restricted landing area" in this Section
are defined to incorporate the meaning ascribed to those terms in Section
8 of the "Illinois Aeronautics Act", approved July 24, 1945, as amended,
and also include any other area  of the airport that has been designated
 such by the airport authority.

The terms "airman" and "airport" in this Section are defined to incorporate the meaning ascribed to those terms in Sections 6 and 12 of the Illinois Aeronautics Act.

(g) Paragraph (2) of subsection (a) does not apply to a peace officer or other official of a unit of government who enters a restricted area or a restricted landing area used in connection with an airport facility,
or part thereof, in the performance of his or her official duties.

    (h) Sentence.
    (1) A violation of paragraph (2) of subsection (a) is a Class A misdemeanor.
    (2) A violation of paragraph (1) or (3) of subsection (a) is a Class 4 felony.
    (3) A violation of subsection (b) is a Class 3 felony.
(Source: P.A. 97-1108, eff. 1-1-13.)

720 ILCS 5/21-8

(720 ILCS 5/21-8)

Sec. 21-8. Criminal trespass to a nuclear facility.

(a) A person commits criminal trespass to a nuclear facility
when he or she
knowingly and without lawful authority:

(1) enters or remains within a nuclear facility or on

the grounds of a nuclear facility, after receiving notice before entry that entry to the nuclear facility is forbidden;

(2) remains within the facility or on the grounds of

the facility after receiving notice from the owner or manager of the facility or other person authorized by the owner or manager of the facility to give that notice to depart from the facility or grounds of the facility; or

(3) enters or remains within a nuclear facility or on

the grounds of a nuclear facility, by presenting false documents or falsely representing his or her identity orally to the owner or manager of the facility.  This paragraph (3) does not apply to a peace officer or other official of a unit of government who enters or remains in the facility in the performance of his or her official duties.

(b) A person has received notice from the owner or manager of the
facility or other person authorized by the owner or manager of the
facility within the meaning of paragraphs (1) and (2) of subsection (a) if he or she has been
notified personally, either orally or in writing,
or if a printed or written notice forbidding the entry has
been conspicuously posted or exhibited at the main entrance to the
facility or grounds of the facility or the forbidden part of the
facility.

(c) In this Section, "nuclear facility" has the meaning ascribed
to it in Section 3 of the Illinois Nuclear Safety Preparedness Act.

(d) Sentence. Criminal trespass to a nuclear facility is a
Class 4 felony.

(Source: P.A. 97-1108, eff. 1-1-13.)