The importance of bringing new perspectives into the defense industry is arguably more relevant today than it has ever been in the push to produce more innovate technologies and systems. This however brings up an entire new set of issues regarding the ethics of working with or for an industry that may utilize your knowledge and expertise to make weapons that injure and kill. Beyond that, there is also the question of how wars contribute to short and long term environmental destruction. Scientists, engineers, and other experts from various backgrounds that work to solve technical problems involved with military work are becoming increasingly concerned with these questions as modern wars produce greater causalities, specifically civilian casualties. This study conducted by experts in electrical engineering even went as far as to calculate the opportunity cost of weapons manufacturing for things like environmental protection and education.
Every individual has their own personal set of moral and ethical beliefs and there are plenty of reasons to believe that someone involved in the defense industry could use their skills to bring, not only more humanity to the industry, but also smarter technologies that reduce unnecessary casualties. It is unrealistic to assume that everyone involved in this industry does it just for the love of money and destruction. Certainly there are perceptions about the defense industry that have little to no ground to stand on but if those capable of making the world safer are too afraid to get involved then the cycle is liable to continue. This is not only a complex philosophical question but also a question that relevant people in the defense industry should be asking themselves as they look to recruit new talent and procure the next generation of innovations from civilian sources.