When Groundswell Design Group wanted to add fire and water effects to the St Louis Train Station as part of an ongoing project to revamp the massive train station they decided to call Sigma Services. What resulted was a series of custom "lotus flower" flame units that include special fog effects giving the illusion that the flowers are smoking. The system, based around Sigma Services' proprietary Firewater System is capable of firing on command flames up to 25' in the middle of the fountain. As part of the system Sigma also designed a custom rain curtain effect. Be sure to check out the show at Union Station in St Louis!