  We present measurements of Josephson junctions containing three magnetic
layers with noncolinear magnetizations. The junctions are of the form
$S/F^{\prime}/N/F/N/F^{\prime \prime}/S$, where $S$ is superconducting Nb,
$F^\prime$ is either a thin Ni or Permalloy layer with in-plane magnetization,
$N$ is the normal metal Cu, $F$ is a synthetic antiferromagnet (SAF) with
magnetization perpendicular to the plane, composed of Pd/Co multilayers on
either side of a thin Ru spacer, and $F^{\prime \prime}$ is a thin Ni layer
with in-plane magnetization. The supercurrent in these junctions decays more
slowly as a function of the $F$-layer thickness than for similar spin-singlet
junctions not containing the $F^\prime$ and $F^{\prime \prime}$ layers. The
slower decay is the prime signature that the supercurrent in the central part
of these junctions is carried by spin-triplet pairs. The junctions containing
$F^{\prime}=$ Permalloy are suitable for future experiments where either the
amplitude of the critical current or the ground-state phase difference across
the junction is controlled by changing the relative orientations of the
magnetizations of the $F^{\prime}$ and $F^{\prime \prime}$ layers.
