As we've pointed out before, the Bengals will hold a local prospects day for players entering the NFL draft that played college ball in the area. Hence, local prospect day. As for the second, the Bengals are generally interested in improving the depth.
After starters Johnathan Joseph and Leon Hall, the team's cornerback roster goes from Morgan Trent, Mike Mickens, Keiwan Ratliff, Antonio Smith and, when he eventually signs his tender, David Jones. The safety position, I believe, is weaker and far more uncertain. With Roy Williams, you'll have injury weighing heavily. Chinedum Ndukwe and Chris Crocker are solid and Kyries Hebert is best used on special teams. So yea, the team could use help in the secondary.
One of those prospects invited for the Bengals local prospect day is University of Cincinnati defensive back Brad Jones. Not invited to the NFL Combine this year, Jones has "opened some eyes with his impressive workouts", according to Aaron Wilson.
ESPN doesn't rank Jones too favorably. His overall position rank -- they have him as a safety -- is 77th overall. So we can assume that this could be seventh round material.