@ 17:11 Shepherds, Troutman & Mooresville Engine 2 were alerted to reported possible house fire around the 100 block of Greenbay Rd. After dispatch ECOM alerted all units they were receiving multiple calls on same and were advised that it was not a house and possibly a outbuilding/storage structure involved. While responding Shepherds Engine 2 advised of heavy smoke showing from River Hwy. Within 4 minutes Engine 2 arrived on location and advised of a fully involved outbuilding with command (D/O Z.Fallon) established going to work. FF 534 (M.Forte) who was riding E2 pulled off and stretched 200ft 1'3/4 pre-connect and began suppression efforts. Troutman E2 & Mooresville E2 arrived on location simultaneously. Troutman operator Asst. Chief Kuhnemann hooked up to Shepherds and established a water supply while Mooresville deployed a second hand-line and assisted with backing up FF.Forte. Personnel on scene had a good knock down before the arrival of additional Shepherds units. Chief 510 (Stutts) arrived assumed command and cancelled any further holding only the units on scene. A control time was called at 17:29 and units stayed on scene for mop-up and overhaul before clearing at 18:29.