  How well do current combat helmets protect against Traumatic Brain Injury? To
answer this question it is necessary to evaluate both the measures and
standards of protection. We define measure as a physical test that the helmet
must be subject to and the standard as the quantitative threshold of
performance in this test that the helmet must satisfy to be acceptable. We find
that both the measures are inadequate and the standards are too low. Current
combat helmets simply do not protect against TBI effectively as they have not
been designed to do so. We explain this inadequacy of combat helmet protection
against TBI, and how the situation can be dramatically improved both in the
short and long term.
