aircraft. (F) Use reasonable force, if necessary, to disable, damage, or destroy the unmanned aircraft system or unmanned aircraft. (2) Required coordination The Secretary and the Attorney General shall develop for their respective Departments the actions described in paragraph (1) in coordination with the Secretary of Transportation. (3) Research, testing, training, and evaluation The Secretary and the Attorney General shall conduct research, testing, training on, and evaluation of any equipment, including any electronic equipment, to determine its capability and utility prior to the use of any such technology for any action described in subsection (b)(1). (4) Coordination The Secretary and the Attorney General shall coordinate with the Administrator of the Federal Aviation Administration when any action authorized by this section might affect aviation safety, civilian aviation and aerospace operations, aircraft airworthiness, or the use of the airspace. (c) Forfeiture Any unmanned aircraft system or unmanned aircraft described in subsection (a) that is seized by the Secretary or the Attorney General is subject to forfeiture to the United States. (d) Regulations and guidance (1) In general The Secretary, the Attorney General, and the Secretary of Transportation may prescribe regulations and shall issue guidance in the respective areas of each Secretary or the Attorney General to carry out this section. (2) Coordination (A) Coordination with department of transportation The Secretary and the Attorney General shall coordinate the development of their respective guidance under paragraph (1) with the Secretary of Transportation. (B) Effect on aviation safety The Secretary and the Attorney General shall respectively coordinate with the Secretary of Transportation and the Administrator of the Federal Aviation Administration before issuing any guidance, or otherwise implementing this section, if such guidance or implementation might affect aviation safety, civilian aviation and aerospace operations, aircraft