Lockheed Martin Corp. LMT recently secured a $79.4-million modification contract for providing Apache attack helicopter with night vision sensor systems, subcomponent production and other technical services. The contract was awarded by the U.S. Army Contracting Command, Rock Island Arsenal, Illinois. Work related to the deal is expected to get completed by Oct 31, 2021.Lockheed Martin’s Sensor ProductsLockheed Martin’s radar and electro-optical/infrared sensor systems provide advanced precision targeting, navigation, threat detection, and next generation intelligence, surveillance and reconnaissance capabilities. The company designs radars and sensors for every armed service and operational environment.What Favors Lockheed Martin?Steady and regular order inflows for Lockheed Martin's Rotary and Mission Systems (RMS) unit, which manufactures varied sensor systems, tend to fuel the company’s top-line growth. Notably, the segment recorded third-quarter 2018 net sales of $3.85 billion, owing to higher sales of its integrated warfare systems and sensors (IWSS) program, reflecting a healthy 14.4% improvement from the year-ago quarter. In line with this, we may expect the latest contract to boost RMS’ revenue growth in the days to come.Per Market Research Future, the military UAV sensor market is estimated to witness a CAGR of approximately 6% from 2018 to 2023. Significant investments are being made on the development of military wearable sensor systems, which would lead to rapid growth of the market during the forecasted period. Such growth prospects for this market should benefit Lockheed Martin in the days to come.Price MovementLockheed Martin’s stock declined 6.8% in the last year against the industry’s growth of 2.7%. The underperformance may have been caused by the intense competition that the company faces in the aerospace-defense space for its broad portfolio of products and services, both domestically as well as internationally.Zacks Rank & Other Key PicksLockheed Martin currently carries a Zacks Rank #2 (Buy).A few other top-ranked companies in the same sector are Aerojet Rocketdyne Holdings AJRD. Raytheon Company RTN and The Boeing Company BA.While Aerojet Rocketdyne sports a Zacks Rank #1 (Strong Buy), Raytheon and Boeing carry a Zacks Rank #2. You can see the complete list of today’s Zacks #1 Rank stocks here.Aerojet Rocketdyne came up with average positive earnings surprise of 19.27% in the last four quarters. The Zacks Consensus Estimate for 2018 earnings has increased 43.3% to $1.82 in the past 90 days.Raytheon delivered average positive earnings surprise of 6.71% in the last four quarters. The Zacks Consensus Estimate for 2018 earnings has moved up 1.7% to $10.10 cents in the past 90 days.Boeing delivered average positive earnings surprise of 28.01% in the last four quarters. The Zacks Consensus Estimate for 2018 earnings has moved up 3% to $15.05 in the past 90 days.The Hottest Tech Mega-Trend of AllLast year, it generated $8 billion in global revenues. By 2020, it's predicted to blast through the roof to $47 billion. Famed investor Mark Cuban says it will produce "the world's first trillionaires," but that should still leave plenty of money for regular investors who make the right trades early.See Zacks' 3 Best Stocks to Play This Trend >>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report The Boeing Company (BA): Free Stock Analysis Report Lockheed Martin Corporation (LMT): Free Stock Analysis Report Aerojet Rocketdyne Holdings, Inc. (AJRD): Free Stock Analysis Report Raytheon Company (RTN): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research