Lockheed Martin [LMT] on Tuesday reported a strong close to its 2019 fiscal year with double-digit top and bottom line growth and the company expects further gains in 2020.

Net income in the fourth quarter jumped 15 percent to $1.5 billion, $5.29 earnings per share (EPS), from $1.3 billion ($4.39 EPS) a year ago, comfortably above consensus estimates by 26 cents a share. Total operating margin climbed 70 basis points to 13.5 percent.

Sales in the quarter increased 10 percent to $15.9 billion from $14.4 billion a year ago.

Lockheed Martin Chairman, President and CEO Marillyn Hewson said 2019 was “remarkable” and “extraordinary” during an earnings call with analysts.

All four of the companies operating segments enjoyed higher revenue, with the Space, and Missiles and Fire Control up 14 percent each on hypersonic development work in both segments, Next Generation Overhead Persistent Infrared (OPIR) and GPS III satellite programs and government satellite services, precision fires, missile defense programs, and a logistics support contract for Special Operations Forces.

Sales at the Aeronautics, and Rotary and Mission Systems (RMS) segments were up in the high single digits on F-35 fighter sustainment and development work, classified work, Army sustainment and undersea combat systems programs, and for work on the Littoral Combat Ship and Aegis programs.

Lockheed Martin delivered 51 F-35s during the fourth quarter and 134 for the year, up from 32 and 91 in the same periods in 2018, respectively.

The bottom line gains were driven by a pension tailwind and higher operating profits at three operating segments: RMS, Space and Aeronautics. These segments benefitted from work on the Advanced Extremely High Frequency, Next Gen OPIR, and GPS III satellite programs, fleet ballistic missile programs, Sikorsky helicopter programs, F-35 sustainment, development and production, and the absence of reserves taken a year ago at RMS.

Overall, in 2019, sales increased 11 percent to a record $59.8 billion from $53.8 billion in 2018 and net income soared 24 percent to $6.2 billion ($21.95 EPS) from $5 billion ($17.59 EPS). Per share earnings for 2019 were also a record.

In 2020, Lockheed Martin expects sales between $62.8 billion and $64.3 billion, up from around $62 billion offered in October during the third quarter earnings call, with earnings per share between $23.65 and $23.95. Growth is expected in each of the company’s segments.

Lockheed Martin tallied $5 billion in F-35 orders in the fourth quarter as it finalized Lot 12 and 13 production contracts and added 112 aircraft to the backlog, lifting the backlog to 374 F-35s. The Lot 14 contract is expected to be finalized early this year, she said.

Kenneth Possenriede, Lockheed Martin’s chief financial officer, said on the earnings call that the F-35 program will remain a stout contributor to growth with sales up about 8 percent, driven mainly by production, development work that is up about 10 percent, and sustainment in the high single digits.

The outlook for the F-35 remains robust, particularly for production and sustainment work, Possenriede said. The company expects to deliver 140 aircraft in 2020, around 160 in 2021, 165 in 2022 and then between 170 and 180 afterward.

Within five years, sustainment revenue on the F-35 “will likely double in size from a sales perspective” and over the next 10 years “potentially” could triple, becoming the fastest growing portion of the multinational fighter aircraft program, Possenriede said. Sustainment growth over time will be driven by increasing demand for spares and modernization efforts, even as the company drives down operating costs for its customers, he said.

Hewson also highlighted a $999 million Air Force contract the company received in December for continued work on the Air-Launched Rapid Response Weapon, adding the company’s hypersonic weapons programs had “tremendous growth” in 2019. So far, Lockheed Martin has potentially received more than $4 billion in work on hypersonic weapons programs.

Backlog at the end of 2019 stood at a record $144 billion, up 10 percent from $130.5 billion a year ago, marking five straight years of growth. Backlog is expected to grow between $3 billion and $4 billion in 2020 as orders lighten, Possenriede said. Free cash flow in the quarter was $847 million and for the year was $5.8 billion.