  We show that the recently discovered $\nu=1/2$ quantum Hall states in bilayer
systems are triplet p-wave pairing states of composite Fermions, of exactly the
same form as $^{3}$He superfluids. The observed persistence (though weakening)
of the $\nu=1/2$ state in the two- to one-component crossover region
corresponds to a continuous deformation of the so-called (331) state towards
the ``Pfaffian" state, identical to the well known A to A$_{1}$ transition in
$^{3}$He. This deformation also demonstrates the remarkable fact that electrons
can release and capture ``vortices" in a continuous and incompressible manner
through spin rotations. The broken symmetry of the triplet pairing state is a
``pairing" vector ${\bf d}$. It also implies a (pseudo-spin) magnetization
$\propto i{\bf d}\times {\bf d}^{\ast}$. In the presence of layer tunneling,
the (331) state ({\bf d} real) is unstable against other states with a
magnetization ({\bf d} complex). The recently observed persistence of the
$\nu=5/2$ state in single layer systems in the two- to one-component crossover
region is also consistent with triplet pairing interpretation.
