Six weeks into the third quarter, slow growth and the corresponding uncertainty that comes with it continued to rule. But the CEOs at the three Class Is that held webcasts to share their second-quarter results (all positive) this week said they felt good (to varying degrees) about the second half's prospects — from Union Pacific Corp.'s Jack Koraleski ("We're hopeful that we'll see some economic improvement in the months ahead.") to CSX Corp.'s Michael Ward ("In short, we like what we see — relentless consistent performance and a promising future.") to Kansas City Southern's David Starling ("The KCS growth story is very much intact" and "We're looking forward to a strong finish for the year.")I expect we'll hear similar rail-remains-a-growth-industry sentiments later this year from other rail execs who'll be speaking at our annual RailTrends® summit, which will be which will be held Nov. 21-22, 2013, at the W New York Hotel in New York City. Speakers include Norfolk Southern Corp. Chairman and Chief Executive Officer Wick Moorman, who is this year's recipient of our Railroad Innovator Award; and Canadian Pacific Railway CEO E. Hunter Harrison, who received our award in 2009. I mentioned a few other speakers in my July print issue column. For the complete slate, visit www.railtrends.com.