Ind. Code § 6-8-13-7.5

Sec. 7.5. As used in this chapter, "mutual assistance agreement" means an agreement to which one (1) or more registered businesses and one (1) or more out-of-state businesses are parties and under which a public utility, municipally owned utility, or joint agency owning, operating, or owning and operating infrastructure in Indiana may request and receive assistance from an out-of-state business to perform disaster emergency related work during a disaster period.