This month, the DC Mastermind group welcomed David Nemecek, principal at Bohler Engineering, to their membership ranks. The discussion ranged from the potential impact of the proposed tax bills floating around Congress to the potential sites for Amazon’s second headquarters. Boutique land brokerage firm Enterprise Realty Services was also the highlighted business of the month, with principal Steve Varga discussing how his firm differentiates itself from other brokers in the industry.