Mo. Rev. Stat. § 86.295

Notwithstanding any provision of sections 86.200 to 86.366 to the contrary, if a member dies on or after January 1, 2007, while performing qualified military service, as defined in Section 414(u)(5) of the Internal Revenue Code of 1986, as amended, the member's surviving spouse and other dependents shall be entitled to any benefits, other than benefit increases relating to the period of qualified military service, and the rights and features associated with those benefits which would have been provided under sections 86.280 and 86.290 if the member had returned to active service as a police officer and died while in active service.