Complex sentence: Saab's Remote Tower is used by Sweden's LFV, who became the world's first air navigation service provider to manage an airport remotely when it started remote tower services at Örnsköldsvik Airport in 2015.
Split into simpler sentences: Saab's Remote Tower is used by Sweden's LFV. LFV became the world's first air navigation service provider to manage an airport remotely when it started remote tower services at Örnsköldsvik Airport in 2015.