The appropriate TTB officer may require that operations on wine premises be supervised by any number of appropriate TTB officers necessary for the protection of the revenue or for the enforcement of 26 U.S.C. chapter 51 and applicable regulations.
27 C.F.R. §24.30
Sec. 201, Pub. L. 85-859, 72 Stat. 1381, as amended, 1395, as amended ( 26 U.S.C. 5366 , 5553 )