; and (B) in subsection (a)— (i) by striking operates an unmanned aircraft and knowingly or recklessly and inserting the following: operates an unmanned aircraft and— (1) knowingly or recklessly ; (ii) by striking the period at the end and inserting ; or ; and (iii) by adding at the end the following: (2) knowingly or recklessly interferes with a law enforcement, emergency response, or military operation or activity of a unit or agency of the United States Government or of a State, tribal, or local government (other than a wildfire suppression or law enforcement or emergency response efforts related to a wildfire suppression) shall be fined under this title, imprisoned for not more than 2 years, or both. ; (3) by inserting after section 40A the following: 40B. Misuse of unmanned aircraft (a) Definitions In this section— (1) the term aircraft , notwithstanding section 31(a)(1), means any device, craft, vehicle, or contrivance that is— (A) invented, used, or designed to navigate, fly, or travel in the air; or (B) used or intended to be used for flight in the air; (2) the term airport has the meaning given the term in section 40102(a)(9) of title 49; (3) the term contraband has the meaning given the term in section 80302(a) of title 49; (4) the term dangerous weapon has the meaning given the term in section 930; (5) the term explosive means any thing within the scope of the definition of explosive materials in section 841; (6) the term firearm has the meaning given the term in section 921; (7) the term Federal law includes any form of Federal law, including any Federal statute, rule, regulation, or order; (8) the term personnel of the United States means any Federal officer, employee, or contractor, or any person assisting such an officer, employee, or contractor in the performance of duties; (9) the terms prison and prohibited object have the meanings given those terms in section 1791