By Ryan Vlastelica
NEW YORK (Reuters) - U.S. stock index futures were flat on Wednesday, following a sharp decline in the previous session, as investors looked ahead to a read on GDP expected to show the economy shrank in the first quarter.
* The final read on first-quarter gross domestic product is due at 8:30 a.m. (1230 GMT) and is seen showing a contraction of 1.7 percent, wider than the previous read of minus 1 percent.
* A negative read, which largely reflects the impact of harsh winter weather throughout the early months of the year, is likely priced into markets, but other economic indicators could drive trading. Durable goods orders, also due at 8:30 a.m., are seen as flat in May, while a June read on service sector business activity from financial data firm Markit is seen as essentially unchanged from May.
* The S&P 500 hit an intraday record in early trading on Tuesday, boosted by some positive economic data, but enthusiasm waned in the final hours of trading as concerns over Iraq returned to the forefront. The Dow posted its biggest daily decline in over a month.
* S&P 500 e-mini futures
* Geopolitical tensions will remain in view. In a mounting Sunni insurgency, militants in Iraq attacked one of the country's largest air bases. Separately, the first U.S. teams arrived to assess Iraqi security forces and decide how to help counter the violence.
* Investors are concerned about the impact prolonged turmoil in Iraq could have on oil prices, which are already up 3.8 percent this month. U.S. crude futures
* The CBOE Volatility index <.VIX> spiked more than 10 percent on Tuesday, coinciding with the market's pivot lower, the biggest one-day pop for the "fear index" since April. Still, at 12.13 the VIX remains at very low levels from an historical basis.
* Bristol-Myers Squibb Co
* The U.S. Air Force late Tuesday said it had awarded Lockheed Martin Corp
* Golar LNG Ltd
(Editing by Chizu Nomiyama)