I live in DC, work for the govt., and see lots of articles locally about sequestration impact. Because work rules require notice, Wash Post mentioning 30 days, I doubt that you'll see an immediate impact.
HOWEVER, since congress has blocked efforts to unionize TSA, it is possible that the 30 day period is due to union contract requirements that might not apply to TSA. I don't know.
I do know that most of the press is just repeating political talking points as the parties jockey for position. One side talks about draconian shutdowns of food inspection, airports and long TSA security lines. The other side says no big deal since this is only 2-3 % of the federal budget. The former is misleading because no agency has announced its final plans, much less implemented them. The latter is misleading because over 50% of the budget (the entitlement part) is untouched. the discretionary budget takes all the hit, then compresses the cuts into 7/12 of the fiscal year, so 3% of everything is about 6% of the discretionary budget, applied in roughly half the year, or 12% of what's left. Ouch.