Vortex's Celebration due to Filipe's visit to Brasilia. Filipe is my  former undergraduate and master student. He is currently doing a Ph.D in University of Colorado - USA.  Clockwise: Marcos Fabrício (MSc student - UnB), Filipe Evangelista (PhD student - University of Colorado), FRC, Igor Pereira (PhD student - UnB), Victor Shumy (MSc student - UnB), Leonardo Inácio (MSc student UnB)  e Matheus Aguilar (PhD student -  UnB).