Shanghai Airlines' 737-86N(W), B-5148 (c/n 34254), overnighted here amidst the rain, and last night's thunderstorm, on its delivery flight. This 738 is on lease from GECAS. It's seen here being pushed back onto Taxiway C, for departure to MAJ.
Sun Country Airlines has leased N819SY (c/n 34254, l/n 1897) from ALC, and is taking delivery of it on a ferry flight from TNA to MSP (via ANC).
What's the tie-in? Back in March 2006, this 737-86N was originally delivered to Shanghai Airlines as B-5148, under lease from GECAS. In 2011, GECAS sold it to ALC, with the lease transferred.