An emissions management module for a mission management system of a moving platform , said emissions management module being configured to: obtain attribute data representative of: i) prevailing emissions control parameters, wherein the attribute data representative of prevailing emissions control parameters comprises location data representative of an adversary node defining an emissions control region ; and ii) a direction of said emissions control region with respect to said moving platform; generate, using said attribute data, an emissions plan that complies with restrictions defined by said emissions control parameters, and includes at least an emissions limit defining: a maximum transmission power permitted to be utilised by an on-board antenna or portion of aperture antenna in said direction of said emissions control region with respect to said moving platform; and/or a specified maximum emissions duration in said direction of said emissions control region with respect to said moving platform; and in response to said emissions plan: manoeuvre said moving platform such that the on-board antenna does not point in the direction of said emissions control region; or reduce transmission power delivered to the on-board antenna such that it is below the maximum transmission power, whereby an emissions signature of said moving platform is reduced in the direction of said emissions control region while communication with another node is maintained. obtain attribute data representative of: i) prevailing emissions control parameters, wherein the attribute data representative of prevailing emissions control parameters comprises location data representative of an adversary node defining an emissions control region ; and ii) a direction of said emissions control region with respect to said moving platform; i) prevailing emissions control parameters, wherein the attribute data representative of prevailing emissions control parameters comprises location data representative of an adversary node defining an emissions control region ; and ii) a direction of said emissions control region with respect to said moving platform; generate, using said attribute data, an emissions plan that complies with restrictions defined by said emissions control parameters, and includes at least an emissions limit defining: a maximum transmission power permitted to be utilised by an on-board antenna or portion of aperture antenna in said direction of said emissions control region with respect to said moving platform; and/or a specified maximum emissions duration in said direction of said emissions control region with respect to said moving platform; and a maximum transmission power permitted to be utilised by an on-board antenna or portion of aperture antenna in said direction of said emissions control region with respect to said moving platform; and/or a specified maximum emissions duration in said direction of said emissions control region with respect to said moving platform; and in response to said emissions plan: manoeuvre said moving platform such that the on-board antenna does not point in the direction of said emissions control region; or reduce transmission power delivered to the on-board antenna such that it is below the maximum transmission power, whereby an emissions signature of said moving platform is reduced in the direction of said emissions control region while communication with another node is maintained. manoeuvre said moving platform such that the on-board antenna does not point in the direction of said emissions control region; or reduce transmission power delivered to the on-board antenna such that it is below the maximum transmission power, whereby an emissions signature of said moving platform is reduced in the direction of said emissions control region while communication with another node is maintained. <EOS>