Both
Great photos but will have to look closer at the male to hazard even a tenuous guess, particularly since Zeus would be 17 years old which is more than senior citizen for a peregrine, so more likely its a new bird, but he looks nice. The female however, she has alot of brown showing, which was Alice's calling card last year ....
If they do nest this late, say eggs by the end of the first week in July, hatch end of first week in August and fledging in September ... don't know whether to hope they do nest or they don't ...