Free Prime grocery delivery, GrubHub’s stock falls 43%, and Lockheed Martin’s $34B fighter jet order

Summary: We just realized today’s Snacks has a delivery theme. GrubHub stock lost nearly half its value because the CEO thinks you’ve been “promiscuous” with your late-night food delivery. Amazon goes with the nuclear option by launching free grocery delivery for all prime members. And Lockheed Martin just got an expensive order for F-35 fighter jets from the Defense Department.