Lockheed Martin’s (NYSE:LMT) shares fell as much as 4.6% in the first hour of regular trading on Tuesday after the aerospace and defense contractor reported disappointing sales growth. Sales edged up 1% from a year earlier to $17.

Key Takeaways Lockheed Martin missed revenue estimates as aerospace sales tumbled because of contractual and funding issues for its F-35 fighter jet.Still, the company revised its full-year profit outlook higher.

Defense contractor Lockheed Martin lifted its annual profit and sales forecasts on Tuesday, but shares slid 5% because the company's F-35 fighter jet program faced payment headwinds stemming from the government contracting process.