Great. Thank you, Sean. Looking forward, we are optimistic that the significant recent increase in US domestic leisure flying is both enduring and a leading indicator of return to business in international travel. We've seen a nice recovery in heavy maintenance and expect that performance to continue. On that note, while we are aware of the tight labor market, we believe that the labor-related programs that we have established to recruit, train and retain skilled technicians will continue to serve us well, particularly when those programs are coupled with our ongoing investment in innovation to drive efficiency and differentiation inside of our hangars. Also, although the commercial parts supply business has lagged behind the recovery, we have recently seen some early and modest signs of a rebound in that market as well, both in our USM and new parts activities. On the government side, which has been very strong for us, we do expect a moderation in the pace of growth as buying under previous administration normalizes and some of our programs come to a natural completion, such as the C-40 aircraft procurement program for the Marine Corps, but the valuable past performance that we have continued to build and the cost reduction actions that we've taken put us in a strong position to continue to take market share, and our government pipeline remains strong. The path and pace of the commercial air travel recovery continue to remain uncertain, which is underscored by the emergence of the delta variants. As such, we are not issuing full-year guidance. However, in the immediate term, we expect to see performance in Q1 that is similar to or modestly better than Q4. As you know, Q1 is typically our slowest quarter, whereas Q4 is typically our strongest quarter. So normally, you would see a decline from Q4 to Q1. However, this year's expectation of similar performance reflects our belief that our commercial markets will continue their recovery. Over the medium and longer term, we are exceptionally well positioned, we are stronger today than where we were when we entered the pandemic, and we are excited to leverage our efficiency gains, optimize portfolio and strong balance sheet to continue to drive growth and margin expansion going forward. With that, I'll turn it over to the operator for questions.