Evidence is presented concerning the 1.7-Mev state in Be9 and its characteristics, which are currently in doubt because of the extreme weakness of the anomaly observed in charged-particle reactions. On the basis of this evidence, the state now appears to be well established, and its spin and parity are probably 1/2 + or 1/2 -. The evidence in favor of the 1/2 + assignment, corresponding to an intermediate-coupling parameter aK of ~2.75 for Be9, comes from the final-state-interaction analysis in the present paper of the results of three different charged-particle reactions at Indiana University and the Massachusetts Institute of Technology, from the agreement between the scattering length for neutrons on Be8 resulting from this analysis and the predictions of Ford and Bohm, and from the continuity of aK with mass number. In addition, experiments on the mirror nucleus B9 by Marion et al. seem to be in disagreement with the existence of a 1/2 - state in this region. The evidence in favor of the 1/2 - assignment, corresponding to aK~1.5, comes from the static magnetic moment of Be9 and the photodisintegration data of Connors and Miller.