The cored foam layers used in five of the MMS experiments are believed to have contributed a net shielding benefit by the fact that they fully support the Nextel layers. They also appear to mitigate lateral expansion of the debris cloud which results in smaller entry holes and reduced tearing within the Nextel layers. For this reason, the shielding properties of cored foam "lightening holes", used as a Nextel support mechanism and as a debris cloud mitigation material, should be further investigated.

The probability of no penetration (PNP) for the Mars module was estimated to be 98% over the entire mission. This PNP does not reflect the MOD threat to the MTH propulsion system or the airlock. The mission parameters and shield ballistic limits must be further refined in order to assess the integrated PNP for the whole spacecraft.