As Sweden effectively shared borders with the Soviet Union over the Baltic Sea, both sides regularly flew into the international space between the two. Due to this, the Saab 35s had to regularly intercept and escort Soviet planes away from Swedish airspace. Sometimes these meetings would result in non-combat dogfights, which were either of playful or threatening nature. Apparently, the Cobra maneuver was used during some of these engagements, much to the surprise of the Soviets. Later in the Saab 35's service life, the maneuver was used as a secret weapon by Saab-35 pilots in mock dogfights when facing the more advanced Saab 37 fighter plane. The Saab 37 was unable to safely enter super stalls, and therefore its pilots did not receive any major training against it. Due to this, the Cobra maneuver was unknown to many Saab 37 pilots prior to facing it in combat. Due to the interesting nature of the tactic, some Saab 37 pilots tried to do it with the Saab 37, but to their dismay it was unable to effectively do it above speeds of 350 km/h as the Saab 37 couldn't safely take the necessary gs to do it above that, effectively rendering it useless in combat.