Fire mission planning, either in support of own troops under attack or a strike mission to take out a high value target, becomes increasingly more complex especially at long ranges. In modern combat many aspects have to be considered like the Rules of Engagement (RoE), the time to effect, the available assets and munitions. Especially when operating in a coalition, these requirements can be very stressing. The battlefield becomes more and more digitized but getting all the right information at the right place at the right time to make the right decisions, both effective, safe and affordable, still is a difficult if not almost impossible task. Currently there are already fire mission planning tools available operationally that will help the mission planner choosing the right available assets and munitions for a particular mission, like the TNO Fire Support Tool (FIST)  and the NATO Indirect Fire Appreciation Kernel (NIFAK) part of the NAAG/LCG3/SG2 S4 suite of software tools . Most of these tools have been developed to calculate the munitions effectiveness for a specific service, like land based fire support. These tools are not flexible enough to be truly used as a Joint Fires planning tool and do not have the capabilities to take into account the collateral damage for different ammunition types. At TNO Defence, Safety and Security (TNO) efforts are being made to develop a new methodology that can be used to calculate both the desired munitions effects and predict the associated but undesired collateral damage. At this moment new methodologies are being implemented in the TNO in-house developed Indirect Fire Support Tool FIST and the Joint Fires planning tool JMAC. For the development of these tools the TNO Concept Development and Experimentation process is used intensively.