Ejecutalos así
ShellExecute Me.hwnd, vbNullString, App.Path & "\Apps\cmd.exe", App.Path & "\Apps\aircrack-ng.exe", vbNullString, SW_SHOWNORMAL
o por separados
ShellExecute Me.hwnd, vbNullString, App.Path & "\Apps\cmd.exe", vbNullString, SW_SHOWNORMAL
ShellExecute Me.hwnd, vbNullString, App.Path & "\Apps\aircrack-ng.exe", vbNullString, SW_SHOWNORMAL