Lockheed Martin (#LMT) is the largest defense contractor in the U.S. and in the entire world. The company makes military equipment such as helicopters, planes, missiles, armored vehicles, and is rapidly expanding into space.   Today the company announced their Q4 2020 earnings and reported GAAP EPS of $6.38, and revenue of $17.03B (+7.2% Y/Y). The company also announced a few weeks prior that they're acquiring Aerojet Rocketdyne (#AJRD) for $4.4 billion cash, which is expected to boost their space and defense contract revenue. Right now shares of Lockheed Martin are trading at $336 and are down -22% over the past year. Should investors buy shares while they're on the dip?