Switzerland's existing fleet of decades-old F-5 jets is considered too outdated to defend its skies and repel intruders. (Joe Klamar/AFP via Getty Images)
A Saab JAS 39 Gripen fighter, eyed by the Swiss for procurement, taxis during the NATO exercise Loyal Arrow on June 10, 2009. (Patrick Tragardh/AFP via Getty Images)
A Eurofighter Typhoon, of which Switzerland has shown interest for its "Air 2030" program, comes into land during a press preview day in Fairford, England. (Matt Cardy/Getty Images)
A French Rafale fighter jet performs during the Dubai Airshow on Nov. 12, 2017, in the United Arab Emirates. Switzerland has shown interest in procuring the fighter. (Karim Sahib/AFP via Getty Images)
A U.S. Navy F/A-18 Super Hornet lands on the deck of the aircraft carrier Ronald Reagan. Switzerland may replace its decades-old fleet of the aircraft with new ones made by Boeing. (Ian Hitchcock/Getty Images)
Switzerland is eyeing the F-35A, manufactured by Lockheed Martin, for its "Air 2030" program. (STR/AFP via Getty Images)
The SAMP/T system is on the short list for Switzerland's ground-based weapons procurement effort. (MBDA)
The David's Sling missile defense system could end up in Switzerland as part of an air-defense procurement effort. (Jack Guez/AFP via Getty Images)
Raytheon’s Patriot system is also on the short list for an air-defense procurement program in Switzerland. (Officer Candidate Sebastian Apel/Air Defence Missile Group 24)